Publish

- @0x/contracts-asset-proxy@3.7.6
 - @0x/contracts-broker@1.1.24
 - @0x/contracts-coordinator@3.1.25
 - @0x/contracts-dev-utils@1.3.23
 - @0x/contracts-erc1155@2.1.24
 - @0x/contracts-erc20@3.3.3
 - @0x/contracts-erc721@3.1.24
 - @0x/contracts-exchange-forwarder@4.2.25
 - @0x/contracts-exchange-libs@4.3.24
 - @0x/contracts-exchange@3.2.25
 - @0x/contracts-extensions@6.2.19
 - @0x/contracts-integrations@2.7.26
 - @0x/contracts-multisig@4.1.25
 - @0x/contracts-staking@2.0.32
 - @0x/contracts-test-utils@5.3.21
 - @0x/contracts-treasury@1.0.1
 - @0x/contracts-utils@4.7.3
 - @0x/contracts-zero-ex@0.18.2
 - @0x/asset-swapper@6.0.0
 - @0x/contract-addresses@5.10.0
 - @0x/contract-wrappers-test@12.2.36
 - @0x/contract-wrappers@13.12.3
 - @0x/migrations@6.6.0
 - @0x/order-utils@10.4.16
 - @0x/protocol-utils@1.2.0

.github/workflows/publish.yml

@@ -24,9 +24,9 @@ jobs:
                 ref: 'development'
                 fetch-depth: 0
             - uses: actions/setup-node@v1
-            - uses: actions/setup-python@v2
               with:
                 node-version: 10
+            - uses: actions/setup-python@v2
             - name: 'configure git'
               run: |
                   git config --global user.email "github-actions@github.com"

.gitignore

@@ -113,6 +113,8 @@ contracts/dev-utils/generated-artifacts/
 contracts/dev-utils/test/generated-artifacts/
 contracts/zero-ex/generated-artifacts/
 contracts/zero-ex/test/generated-artifacts/
+contracts/treasury/generated-artifacts/
+contracts/treasury/test/generated-artifacts/
 
 # generated truffle contract artifacts/
 contracts/broker/build/
@@ -167,6 +169,8 @@ contracts/dev-utils/generated-wrappers/
 contracts/dev-utils/test/generated-wrappers/
 contracts/zero-ex/generated-wrappers/
 contracts/zero-ex/test/generated-wrappers/
+contracts/treasury/generated-wrappers/
+contracts/treasury/test/generated-wrappers/
 
 # Doc README copy
 packages/*/docs/README.md

.prettierignore

@@ -64,6 +64,10 @@ lib
 /contracts/zero-ex/test/generated-wrappers
 /contracts/zero-ex/generated-artifacts
 /contracts/zero-ex/test/generated-artifacts
+/contracts/treasury/generated-wrappers
+/contracts/treasury/test/generated-wrappers
+/contracts/treasury/generated-artifacts
+/contracts/treasury/test/generated-artifacts
 /contracts/staking/build/
 /contracts/coordinator/build/
 /contracts/exchange/build/
@@ -82,4 +86,5 @@ lib
 /packages/asset-swapper/test/generated-wrappers
 package.json
 packages/*/docs
+docs/
 *.sol

.readthedocs.yaml

@@ -0,0 +1,23 @@
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
+# Build documentation with MkDocs
+#mkdocs:
+#  configuration: mkdocs.yml
+
+# Optionally build your docs in additional formats such as PDF
+#formats:
+#  - pdf
+
+# Optionally set the version of Python and requirements required to build your docs
+python:
+  version: 3.7
+  install:
+    - requirements: docs/requirements.txt

README.md

@@ -8,7 +8,7 @@ This repository is a monorepo including the 0x protocol smart contracts and nume
 
 [website-url]: https://0x.org
 
-[![CircleCI](https://circleci.com/gh/0xProject/0x-monorepo.svg?style=svg&circle-token=61bf7cd8c9b4e11b132089dfcffdd1be277d1e0c)](https://circleci.com/gh/0xProject/0x-monorepo)
+[![CircleCI](https://circleci.com/gh/0xProject/protocol.svg?style=svg&circle-token=61bf7cd8c9b4e11b132089dfcffdd1be277d1e0c)](https://circleci.com/gh/0xProject/protocool)
 [![Coverage Status](https://coveralls.io/repos/github/0xProject/0x-monorepo/badge.svg?branch=development)](https://coveralls.io/github/0xProject/0x-monorepo?branch=development)
 [![Discord](https://img.shields.io/badge/chat-discord.chat-yellow.svg?style=flat)](https://discordapp.com/invite/d3FTX3M)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
@@ -92,7 +92,7 @@ yarn build
 To build a specific package:
 
 ```bash
-PKG=@0x/web3-wrapper yarn build
+PKG=@0x/contract-wrappers yarn build
 ```
 
 To build all contracts packages:
@@ -115,7 +115,7 @@ To watch a specific package and all it's dependent packages:
 PKG=[NPM_PACKAGE_NAME] yarn watch
 
 e.g
-PKG=@0x/web3-wrapper yarn watch
+PKG=@0x/contract-wrappers yarn watch
 ```
 
 ### Clean
@@ -143,7 +143,7 @@ yarn rebuild
 To re-build (clean & build) a specific package & it's deps:
 
 ```bash
-PKG=0x.js yarn rebuild
+PKG=@0x/contract-wrappers yarn rebuild
 ```
 
 ### Lint
@@ -157,7 +157,7 @@ yarn lint
 Lint a specific package:
 
 ```bash
-PKG=0x.js yarn lint
+PKG=@0x/contract-wrappers yarn lint
 ```
 
 ### Run Tests
@@ -171,7 +171,7 @@ yarn test
 Run a specific package's test:
 
 ```bash
-PKG=@0x/web3-wrapper yarn test
+PKG=@0x/contract-wrappers yarn test
 ```
 
 Run all contracts packages tests:

contracts/.solhint.json

@@ -16,6 +16,7 @@
         "quotes": ["error", "double"],
         "separate-by-one-line-in-contract": "error",
         "space-after-comma": "error",
-        "statement-indent": "error"
+        "statement-indent": "error",
+        "no-empty-blocks": false
     }
 }

contracts/asset-proxy/CHANGELOG.json

@@ -1,4 +1,159 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "3.7.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "3.7.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "3.7.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "3.7.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "3.7.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "3.7.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "3.7.0",
+        "changes": [
+            {
+                "note": "Fix Bancor support of ETH",
+                "pr": 88
+            }
+        ],
+        "timestamp": 1608105788
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "3.6.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "3.6.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "3.6.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "3.6.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "3.6.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "3.6.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "3.6.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.6.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.6.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "3.6.0",
+        "changes": [
+            {
+                "note": "Add `SwerveBridge` and `SnowSwapBridge` (duplicate of `CurveBridge`)",
+                "pr": 2707
+            }
+        ],
+        "timestamp": 1603833198
+    },
     {
         "version": "3.5.0",
         "changes": [

contracts/asset-proxy/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.7.6 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v3.7.5 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v3.7.4 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v3.7.3 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v3.7.2 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v3.7.1 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v3.7.0 - _December 16, 2020_
+
+    * Fix Bancor support of ETH (#88)
+
+## v3.6.9 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v3.6.8 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v3.6.7 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v3.6.6 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v3.6.5 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v3.6.4 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.6.3 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.6.2 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.6.1 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.6.0 - _October 27, 2020_
+
+    * Add `SwerveBridge` and `SnowSwapBridge` (duplicate of `CurveBridge`) (#2707)
+
 ## v3.5.0 - _October 21, 2020_
 
     * Update `CurveBridge` to support more varied curves (#2633)

contracts/asset-proxy/contracts/src/bridges/BancorBridge.sol

@@ -21,6 +21,7 @@ pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
 import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
 import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
 import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
@@ -36,6 +37,20 @@ contract BancorBridge is
     struct TransferState {
         address bancorNetworkAddress;
         address[] path;
+        IEtherToken weth;
+    }
+
+    /// @dev Bancor ETH pseudo-address.
+    address constant public BANCOR_ETH_ADDRESS = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
+
+    // solhint-disable no-empty-blocks
+    /// @dev Payable fallback to receive ETH from Bancor/WETH.
+    function ()
+        external
+        payable
+    {
+        // Poor man's receive in 0.5.9
+        require(msg.data.length == 0);
     }
 
     /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
@@ -60,7 +75,6 @@ contract BancorBridge is
     {
         // hold variables to get around stack depth limitations
         TransferState memory state;
-
         // Decode the bridge data.
         (
             state.path,
@@ -68,34 +82,42 @@ contract BancorBridge is
         // solhint-disable indent
         ) = abi.decode(bridgeData, (address[], address));
         // solhint-enable indent
+        state.weth = IEtherToken(_getWethAddress());
 
-        require(state.path.length > 0, "BancorBridge/PATH_MUST_EXIST");
+        require(state.path.length >= 2, "BancorBridge/PATH_LENGTH_MUST_BE_GREATER_THAN_TWO");
-        // Just transfer the tokens if they're the same.
+
-        if (state.path[0] == toTokenAddress) {
+        // Grant an allowance to the Bancor Network to spend `fromTokenAddress` token.
-            LibERC20Token.transfer(state.path[0], to, amount);
+        uint256 fromTokenBalance;
-            return BRIDGE_SUCCESS;
+        uint256 payableAmount = 0;
+        // If it's ETH in the path then withdraw from WETH
+        // The Bancor path will have ETH as the 0xeee address
+        // Bancor expects to be paid in ETH not WETH
+        if (state.path[0] == BANCOR_ETH_ADDRESS) {
+            fromTokenBalance = state.weth.balanceOf(address(this));
+            state.weth.withdraw(fromTokenBalance);
+            payableAmount = fromTokenBalance;
+        } else {
+            fromTokenBalance = IERC20Token(state.path[0]).balanceOf(address(this));
+            LibERC20Token.approveIfBelow(state.path[0], state.bancorNetworkAddress, fromTokenBalance);
         }
 
-        // Otherwise use Bancor to convert
-        require(state.path.length > 2, "BancorBridge/PATH_LENGTH_MUST_BE_GREATER_THAN_TWO");
-        require(state.path[state.path.length - 1] == toTokenAddress, "BancorBridge/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN");
-        
-        // // Grant an allowance to the Bancor Network to spend `fromTokenAddress` token.
-        uint256 fromTokenBalance = IERC20Token(state.path[0]).balanceOf(address(this));
-        LibERC20Token.approveIfBelow(state.path[0], state.bancorNetworkAddress, fromTokenBalance);
-
         // Convert the tokens
-        uint256 boughtAmount = IBancorNetwork(state.bancorNetworkAddress).convertByPath(
+        uint256 boughtAmount = IBancorNetwork(state.bancorNetworkAddress).convertByPath.value(payableAmount)(
             state.path, // path originating with source token and terminating in destination token
             fromTokenBalance, // amount of source token to trade
             amount, // minimum amount of destination token expected to receive
-            to, // beneficiary
+            state.path[state.path.length-1] == BANCOR_ETH_ADDRESS ? address(this) : to, // beneficiary
             address(0), // affiliateAccount; no fee paid
             0 // affiliateFee; no fee paid
         );
 
+        if (state.path[state.path.length-1] == BANCOR_ETH_ADDRESS) {
+            state.weth.deposit.value(boughtAmount)();
+            state.weth.transfer(to, boughtAmount);
+        }
+
         emit ERC20BridgeTransfer(
-            state.path[0], // fromTokenAddress
+            state.path[0] == BANCOR_ETH_ADDRESS ? address(state.weth) : state.path[0],
             toTokenAddress,
             fromTokenBalance,
             boughtAmount,

contracts/asset-proxy/contracts/src/bridges/CryptoComBridge.sol

@@ -0,0 +1,136 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.5.9;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/interfaces/IEtherToken.sol";
+import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
+import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
+import "@0x/contracts-utils/contracts/src/LibAddressArray.sol";
+import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
+import "../interfaces/IUniswapV2Router01.sol";
+import "../interfaces/IERC20Bridge.sol";
+
+
+// solhint-disable space-after-comma
+// solhint-disable not-rely-on-time
+contract CryptoComBridge is
+    IERC20Bridge,
+    IWallet,
+    DeploymentConstants
+{
+    struct TransferState {
+        address[] path;
+        address router;
+        uint256 fromTokenBalance;
+    }
+
+    /// @dev Callback for `IERC20Bridge`. Tries to buy `amount` of
+    ///      `toTokenAddress` tokens by selling the entirety of the `fromTokenAddress`
+    ///      token encoded in the bridge data.
+    /// @param toTokenAddress The token to buy and transfer to `to`.
+    /// @param from The maker (this contract).
+    /// @param to The recipient of the bought tokens.
+    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
+    /// @param bridgeData The abi-encoded path of token addresses. Last element must be toTokenAddress
+    /// @return success The magic bytes if successful.
+    function bridgeTransferFrom(
+        address toTokenAddress,
+        address from,
+        address to,
+        uint256 amount,
+        bytes calldata bridgeData
+    )
+        external
+        returns (bytes4 success)
+    {
+        // hold variables to get around stack depth limitations
+        TransferState memory state;
+
+        // Decode the bridge data to get the `fromTokenAddress`.
+        // solhint-disable indent
+        (state.path, state.router) = abi.decode(bridgeData, (address[], address));
+        // solhint-enable indent
+
+        require(state.path.length >= 2, "CryptoComBridge/PATH_LENGTH_MUST_BE_AT_LEAST_TWO");
+        require(state.path[state.path.length - 1] == toTokenAddress, "CryptoComBridge/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN");
+
+        // Just transfer the tokens if they're the same.
+        if (state.path[0] == toTokenAddress) {
+            LibERC20Token.transfer(state.path[0], to, amount);
+            return BRIDGE_SUCCESS;
+        }
+
+        // Get our balance of `fromTokenAddress` token.
+        state.fromTokenBalance = IERC20Token(state.path[0]).balanceOf(address(this));
+
+        // Grant the SushiSwap router an allowance.
+        LibERC20Token.approveIfBelow(
+            state.path[0],
+            state.router,
+            state.fromTokenBalance
+        );
+
+        // Buy as much `toTokenAddress` token with `fromTokenAddress` token
+        // and transfer it to `to`.
+        IUniswapV2Router01 router = IUniswapV2Router01(state.router);
+        uint[] memory amounts = router.swapExactTokensForTokens(
+             // Sell all tokens we hold.
+            state.fromTokenBalance,
+             // Minimum buy amount.
+            amount,
+            // Convert `fromTokenAddress` to `toTokenAddress`.
+            state.path,
+            // Recipient is `to`.
+            to,
+            // Expires after this block.
+            block.timestamp
+        );
+
+        emit ERC20BridgeTransfer(
+            // input token
+            state.path[0],
+            // output token
+            toTokenAddress,
+            // input token amount
+            state.fromTokenBalance,
+            // output token amount
+            amounts[amounts.length - 1],
+            from,
+            to
+        );
+
+        return BRIDGE_SUCCESS;
+    }
+
+    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
+    ///      and sign for itself in orders. Always succeeds.
+    /// @return magicValue Success bytes, always.
+    function isValidSignature(
+        bytes32,
+        bytes calldata
+    )
+        external
+        view
+        returns (bytes4 magicValue)
+    {
+        return LEGACY_WALLET_MAGIC_VALUE;
+    }
+}

contracts/asset-proxy/contracts/src/bridges/KyberBridge.sol

@@ -56,11 +56,14 @@ contract KyberBridge is
     uint256 constant private KYBER_RATE_BASE = 10 ** 18;
 
     // solhint-disable no-empty-blocks
-    /// @dev Payable fallback to receive ETH from Kyber.
+    /// @dev Payable fallback to receive ETH from Kyber/WETH.
     function ()
         external
         payable
-    {}
+    {
+        // Poor man's receive in 0.5.9
+        require(msg.data.length == 0);
+    }
 
     /// @dev Callback for `IKyberBridge`. Tries to buy `amount` of
     ///      `toTokenAddress` tokens by selling the entirety of the opposing asset

contracts/asset-proxy/contracts/src/bridges/ShellBridge.sol

@@ -51,16 +51,15 @@ contract ShellBridge is
         external
         returns (bytes4 success)
     {
-        // Decode the bridge data to get the `fromTokenAddress`.
+        // Decode the bridge data to get the `fromTokenAddress` and `pool`.
-        (address fromTokenAddress) = abi.decode(bridgeData, (address));
+        (address fromTokenAddress, address pool) = abi.decode(bridgeData, (address, address));
 
         uint256 fromTokenBalance = IERC20Token(fromTokenAddress).balanceOf(address(this));
-        IShell exchange = IShell(_getShellAddress());
         // Grant an allowance to the exchange to spend `fromTokenAddress` token.
-        LibERC20Token.approveIfBelow(fromTokenAddress, address(exchange), fromTokenBalance);
+        LibERC20Token.approveIfBelow(fromTokenAddress, pool, fromTokenBalance);
 
         // Try to sell all of this contract's `fromTokenAddress` token balance.
-        uint256 boughtAmount = exchange.originSwap(
+        uint256 boughtAmount = IShell(pool).originSwap(
             fromTokenAddress,
             toTokenAddress,
             fromTokenBalance,

contracts/asset-proxy/contracts/src/bridges/SnowSwapBridge.sol

@@ -0,0 +1,119 @@
+
+/*
+
+  Copyright 2019 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.5.9;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
+import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
+import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
+import "../interfaces/IERC20Bridge.sol";
+import "../interfaces/ICurve.sol";
+
+
+// solhint-disable not-rely-on-time
+// solhint-disable space-after-comma
+contract SnowSwapBridge is
+    IERC20Bridge,
+    IWallet,
+    DeploymentConstants
+{
+    struct SnowSwapBridgeData {
+        address curveAddress;
+        bytes4 exchangeFunctionSelector;
+        address fromTokenAddress;
+        int128 fromCoinIdx;
+        int128 toCoinIdx;
+    }
+
+    /// @dev Callback for `ICurve`. Tries to buy `amount` of
+    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
+    ///      (DAI, USDC) to the Curve contract, then transfers the bought
+    ///      tokens to `to`.
+    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
+    /// @param from The maker (this contract).
+    /// @param to The recipient of the bought tokens.
+    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
+    /// @param bridgeData The abi-encoeded "from" token address.
+    /// @return success The magic bytes if successful.
+    function bridgeTransferFrom(
+        address toTokenAddress,
+        address from,
+        address to,
+        uint256 amount,
+        bytes calldata bridgeData
+    )
+        external
+        returns (bytes4 success)
+    {
+        // Decode the bridge data to get the SnowSwap metadata.
+        SnowSwapBridgeData memory data = abi.decode(bridgeData, (SnowSwapBridgeData));
+
+        require(toTokenAddress != data.fromTokenAddress, "SnowSwapBridge/INVALID_PAIR");
+        uint256 fromTokenBalance = IERC20Token(data.fromTokenAddress).balanceOf(address(this));
+        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
+        LibERC20Token.approveIfBelow(data.fromTokenAddress, data.curveAddress, fromTokenBalance);
+
+        // Try to sell all of this contract's `fromTokenAddress` token balance.
+        {
+            (bool didSucceed, bytes memory resultData) =
+                data.curveAddress.call(abi.encodeWithSelector(
+                    data.exchangeFunctionSelector,
+                    data.fromCoinIdx,
+                    data.toCoinIdx,
+                    // dx
+                    fromTokenBalance,
+                    // min dy
+                    amount
+                ));
+            if (!didSucceed) {
+                assembly { revert(add(resultData, 32), mload(resultData)) }
+            }
+        }
+
+        uint256 toTokenBalance = IERC20Token(toTokenAddress).balanceOf(address(this));
+        // Transfer the converted `toToken`s to `to`.
+        LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
+
+        emit ERC20BridgeTransfer(
+            data.fromTokenAddress,
+            toTokenAddress,
+            fromTokenBalance,
+            toTokenBalance,
+            from,
+            to
+        );
+        return BRIDGE_SUCCESS;
+    }
+
+    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
+    ///      and sign for itself in orders. Always succeeds.
+    /// @return magicValue Magic success bytes, always.
+    function isValidSignature(
+        bytes32,
+        bytes calldata
+    )
+        external
+        view
+        returns (bytes4 magicValue)
+    {
+        return LEGACY_WALLET_MAGIC_VALUE;
+    }
+}

contracts/asset-proxy/contracts/src/bridges/SwerveBridge.sol

@@ -0,0 +1,119 @@
+
+/*
+
+  Copyright 2019 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.5.9;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/interfaces/IERC20Token.sol";
+import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
+import "@0x/contracts-exchange-libs/contracts/src/IWallet.sol";
+import "@0x/contracts-utils/contracts/src/DeploymentConstants.sol";
+import "../interfaces/IERC20Bridge.sol";
+import "../interfaces/ICurve.sol";
+
+
+// solhint-disable not-rely-on-time
+// solhint-disable space-after-comma
+contract SwerveBridge is
+    IERC20Bridge,
+    IWallet,
+    DeploymentConstants
+{
+    struct SwerveBridgeData {
+        address curveAddress;
+        bytes4 exchangeFunctionSelector;
+        address fromTokenAddress;
+        int128 fromCoinIdx;
+        int128 toCoinIdx;
+    }
+
+    /// @dev Callback for `ICurve`. Tries to buy `amount` of
+    ///      `toTokenAddress` tokens by selling the entirety of the opposing asset
+    ///      (DAI, USDC) to the Curve contract, then transfers the bought
+    ///      tokens to `to`.
+    /// @param toTokenAddress The token to give to `to` (i.e DAI, USDC, USDT).
+    /// @param from The maker (this contract).
+    /// @param to The recipient of the bought tokens.
+    /// @param amount Minimum amount of `toTokenAddress` tokens to buy.
+    /// @param bridgeData The abi-encoeded "from" token address.
+    /// @return success The magic bytes if successful.
+    function bridgeTransferFrom(
+        address toTokenAddress,
+        address from,
+        address to,
+        uint256 amount,
+        bytes calldata bridgeData
+    )
+        external
+        returns (bytes4 success)
+    {
+        // Decode the bridge data to get the SwerveBridgeData metadata.
+        SwerveBridgeData memory data = abi.decode(bridgeData, (SwerveBridgeData));
+
+        require(toTokenAddress != data.fromTokenAddress, "SwerveBridge/INVALID_PAIR");
+        uint256 fromTokenBalance = IERC20Token(data.fromTokenAddress).balanceOf(address(this));
+        // Grant an allowance to the exchange to spend `fromTokenAddress` token.
+        LibERC20Token.approveIfBelow(data.fromTokenAddress, data.curveAddress, fromTokenBalance);
+
+        // Try to sell all of this contract's `fromTokenAddress` token balance.
+        {
+            (bool didSucceed, bytes memory resultData) =
+                data.curveAddress.call(abi.encodeWithSelector(
+                    data.exchangeFunctionSelector,
+                    data.fromCoinIdx,
+                    data.toCoinIdx,
+                    // dx
+                    fromTokenBalance,
+                    // min dy
+                    amount
+                ));
+            if (!didSucceed) {
+                assembly { revert(add(resultData, 32), mload(resultData)) }
+            }
+        }
+
+        uint256 toTokenBalance = IERC20Token(toTokenAddress).balanceOf(address(this));
+        // Transfer the converted `toToken`s to `to`.
+        LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
+
+        emit ERC20BridgeTransfer(
+            data.fromTokenAddress,
+            toTokenAddress,
+            fromTokenBalance,
+            toTokenBalance,
+            from,
+            to
+        );
+        return BRIDGE_SUCCESS;
+    }
+
+    /// @dev `SignatureType.Wallet` callback, so that this bridge can be the maker
+    ///      and sign for itself in orders. Always succeeds.
+    /// @return magicValue Magic success bytes, always.
+    function isValidSignature(
+        bytes32,
+        bytes calldata
+    )
+        external
+        view
+        returns (bytes4 magicValue)
+    {
+        return LEGACY_WALLET_MAGIC_VALUE;
+    }
+}

contracts/asset-proxy/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-asset-proxy",
-    "version": "3.5.0",
+    "version": "3.7.6",
     "engines": {
         "node": ">=6.12"
     },
@@ -38,7 +38,7 @@
         "docs:json": "typedoc --excludePrivate --excludeExternals --excludeProtected --ignoreCompilerErrors --target ES5 --tsconfig typedoc-tsconfig.json --json $JSON_FILE_PATH $PROJECT_FILES"
     },
     "config": {
-        "abis": "./test/generated-artifacts/@(BalancerBridge|BancorBridge|ChaiBridge|CreamBridge|CurveBridge|DODOBridge|DexForwarderBridge|DydxBridge|ERC1155Proxy|ERC20BridgeProxy|ERC20Proxy|ERC721Proxy|Eth2DaiBridge|IAssetData|IAssetProxy|IAssetProxyDispatcher|IAuthorizable|IBalancerPool|IBancorNetwork|IChai|ICurve|IDydx|IDydxBridge|IERC20Bridge|IEth2Dai|IGasToken|IKyberNetworkProxy|IMStable|IMooniswap|IShell|IUniswapExchange|IUniswapExchangeFactory|IUniswapV2Router01|KyberBridge|MStableBridge|MixinAssetProxyDispatcher|MixinAuthorizable|MixinGasToken|MooniswapBridge|MultiAssetProxy|Ownable|ShellBridge|StaticCallProxy|SushiSwapBridge|TestBancorBridge|TestChaiBridge|TestDexForwarderBridge|TestDydxBridge|TestERC20Bridge|TestEth2DaiBridge|TestKyberBridge|TestStaticCallTarget|TestUniswapBridge|TestUniswapV2Bridge|UniswapBridge|UniswapV2Bridge).json",
+        "abis": "./test/generated-artifacts/@(BalancerBridge|BancorBridge|ChaiBridge|CreamBridge|CryptoComBridge|CurveBridge|DODOBridge|DexForwarderBridge|DydxBridge|ERC1155Proxy|ERC20BridgeProxy|ERC20Proxy|ERC721Proxy|Eth2DaiBridge|IAssetData|IAssetProxy|IAssetProxyDispatcher|IAuthorizable|IBalancerPool|IBancorNetwork|IChai|ICurve|IDydx|IDydxBridge|IERC20Bridge|IEth2Dai|IGasToken|IKyberNetworkProxy|IMStable|IMooniswap|IShell|IUniswapExchange|IUniswapExchangeFactory|IUniswapV2Router01|KyberBridge|MStableBridge|MixinAssetProxyDispatcher|MixinAuthorizable|MixinGasToken|MooniswapBridge|MultiAssetProxy|Ownable|ShellBridge|SnowSwapBridge|StaticCallProxy|SushiSwapBridge|SwerveBridge|TestBancorBridge|TestChaiBridge|TestDexForwarderBridge|TestDydxBridge|TestERC20Bridge|TestEth2DaiBridge|TestKyberBridge|TestStaticCallTarget|TestUniswapBridge|TestUniswapV2Bridge|UniswapBridge|UniswapV2Bridge).json",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
@@ -51,13 +51,13 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/protocol",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contract-wrappers": "^13.9.0",
+        "@0x/contract-wrappers": "^13.12.3",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
         "@types/lodash": "4.14.104",
@@ -79,17 +79,17 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-erc1155": "^2.1.8",
+        "@0x/contracts-erc1155": "^2.1.24",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-erc721": "^3.1.8",
+        "@0x/contracts-erc721": "^3.1.24",
-        "@0x/contracts-exchange-libs": "^4.3.8",
+        "@0x/contracts-exchange-libs": "^4.3.24",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "lodash": "^4.17.11"
     },
     "publishConfig": {

contracts/asset-proxy/src/artifacts.ts

@@ -9,6 +9,7 @@ import * as BalancerBridge from '../generated-artifacts/BalancerBridge.json';
 import * as BancorBridge from '../generated-artifacts/BancorBridge.json';
 import * as ChaiBridge from '../generated-artifacts/ChaiBridge.json';
 import * as CreamBridge from '../generated-artifacts/CreamBridge.json';
+import * as CryptoComBridge from '../generated-artifacts/CryptoComBridge.json';
 import * as CurveBridge from '../generated-artifacts/CurveBridge.json';
 import * as DexForwarderBridge from '../generated-artifacts/DexForwarderBridge.json';
 import * as DODOBridge from '../generated-artifacts/DODOBridge.json';
@@ -47,8 +48,10 @@ import * as MStableBridge from '../generated-artifacts/MStableBridge.json';
 import * as MultiAssetProxy from '../generated-artifacts/MultiAssetProxy.json';
 import * as Ownable from '../generated-artifacts/Ownable.json';
 import * as ShellBridge from '../generated-artifacts/ShellBridge.json';
+import * as SnowSwapBridge from '../generated-artifacts/SnowSwapBridge.json';
 import * as StaticCallProxy from '../generated-artifacts/StaticCallProxy.json';
 import * as SushiSwapBridge from '../generated-artifacts/SushiSwapBridge.json';
+import * as SwerveBridge from '../generated-artifacts/SwerveBridge.json';
 import * as TestBancorBridge from '../generated-artifacts/TestBancorBridge.json';
 import * as TestChaiBridge from '../generated-artifacts/TestChaiBridge.json';
 import * as TestDexForwarderBridge from '../generated-artifacts/TestDexForwarderBridge.json';
@@ -75,6 +78,7 @@ export const artifacts = {
     BancorBridge: BancorBridge as ContractArtifact,
     ChaiBridge: ChaiBridge as ContractArtifact,
     CreamBridge: CreamBridge as ContractArtifact,
+    CryptoComBridge: CryptoComBridge as ContractArtifact,
     CurveBridge: CurveBridge as ContractArtifact,
     DODOBridge: DODOBridge as ContractArtifact,
     DexForwarderBridge: DexForwarderBridge as ContractArtifact,
@@ -85,7 +89,9 @@ export const artifacts = {
     MixinGasToken: MixinGasToken as ContractArtifact,
     MooniswapBridge: MooniswapBridge as ContractArtifact,
     ShellBridge: ShellBridge as ContractArtifact,
+    SnowSwapBridge: SnowSwapBridge as ContractArtifact,
     SushiSwapBridge: SushiSwapBridge as ContractArtifact,
+    SwerveBridge: SwerveBridge as ContractArtifact,
     UniswapBridge: UniswapBridge as ContractArtifact,
     UniswapV2Bridge: UniswapV2Bridge as ContractArtifact,
     IAssetData: IAssetData as ContractArtifact,

contracts/asset-proxy/src/wrappers.ts

@@ -7,6 +7,7 @@ export * from '../generated-wrappers/balancer_bridge';
 export * from '../generated-wrappers/bancor_bridge';
 export * from '../generated-wrappers/chai_bridge';
 export * from '../generated-wrappers/cream_bridge';
+export * from '../generated-wrappers/crypto_com_bridge';
 export * from '../generated-wrappers/curve_bridge';
 export * from '../generated-wrappers/d_o_d_o_bridge';
 export * from '../generated-wrappers/dex_forwarder_bridge';
@@ -45,8 +46,10 @@ export * from '../generated-wrappers/mooniswap_bridge';
 export * from '../generated-wrappers/multi_asset_proxy';
 export * from '../generated-wrappers/ownable';
 export * from '../generated-wrappers/shell_bridge';
+export * from '../generated-wrappers/snow_swap_bridge';
 export * from '../generated-wrappers/static_call_proxy';
 export * from '../generated-wrappers/sushi_swap_bridge';
+export * from '../generated-wrappers/swerve_bridge';
 export * from '../generated-wrappers/test_bancor_bridge';
 export * from '../generated-wrappers/test_chai_bridge';
 export * from '../generated-wrappers/test_dex_forwarder_bridge';

contracts/asset-proxy/test/artifacts.ts

@@ -9,6 +9,7 @@ import * as BalancerBridge from '../test/generated-artifacts/BalancerBridge.json
 import * as BancorBridge from '../test/generated-artifacts/BancorBridge.json';
 import * as ChaiBridge from '../test/generated-artifacts/ChaiBridge.json';
 import * as CreamBridge from '../test/generated-artifacts/CreamBridge.json';
+import * as CryptoComBridge from '../test/generated-artifacts/CryptoComBridge.json';
 import * as CurveBridge from '../test/generated-artifacts/CurveBridge.json';
 import * as DexForwarderBridge from '../test/generated-artifacts/DexForwarderBridge.json';
 import * as DODOBridge from '../test/generated-artifacts/DODOBridge.json';
@@ -47,8 +48,10 @@ import * as MStableBridge from '../test/generated-artifacts/MStableBridge.json';
 import * as MultiAssetProxy from '../test/generated-artifacts/MultiAssetProxy.json';
 import * as Ownable from '../test/generated-artifacts/Ownable.json';
 import * as ShellBridge from '../test/generated-artifacts/ShellBridge.json';
+import * as SnowSwapBridge from '../test/generated-artifacts/SnowSwapBridge.json';
 import * as StaticCallProxy from '../test/generated-artifacts/StaticCallProxy.json';
 import * as SushiSwapBridge from '../test/generated-artifacts/SushiSwapBridge.json';
+import * as SwerveBridge from '../test/generated-artifacts/SwerveBridge.json';
 import * as TestBancorBridge from '../test/generated-artifacts/TestBancorBridge.json';
 import * as TestChaiBridge from '../test/generated-artifacts/TestChaiBridge.json';
 import * as TestDexForwarderBridge from '../test/generated-artifacts/TestDexForwarderBridge.json';
@@ -75,6 +78,7 @@ export const artifacts = {
     BancorBridge: BancorBridge as ContractArtifact,
     ChaiBridge: ChaiBridge as ContractArtifact,
     CreamBridge: CreamBridge as ContractArtifact,
+    CryptoComBridge: CryptoComBridge as ContractArtifact,
     CurveBridge: CurveBridge as ContractArtifact,
     DODOBridge: DODOBridge as ContractArtifact,
     DexForwarderBridge: DexForwarderBridge as ContractArtifact,
@@ -85,7 +89,9 @@ export const artifacts = {
     MixinGasToken: MixinGasToken as ContractArtifact,
     MooniswapBridge: MooniswapBridge as ContractArtifact,
     ShellBridge: ShellBridge as ContractArtifact,
+    SnowSwapBridge: SnowSwapBridge as ContractArtifact,
     SushiSwapBridge: SushiSwapBridge as ContractArtifact,
+    SwerveBridge: SwerveBridge as ContractArtifact,
     UniswapBridge: UniswapBridge as ContractArtifact,
     UniswapV2Bridge: UniswapV2Bridge as ContractArtifact,
     IAssetData: IAssetData as ContractArtifact,

contracts/asset-proxy/test/bancor_bridge.ts

@@ -12,13 +12,11 @@ import { DecodedLogs } from 'ethereum-types';
 import * as _ from 'lodash';
 
 import { artifacts } from './artifacts';
-
 import { TestBancorBridgeContract } from './generated-wrappers/test_bancor_bridge';
 import {
     TestBancorBridgeConvertByPathInputEventArgs as ConvertByPathArgs,
     TestBancorBridgeEvents as ContractEvents,
     TestBancorBridgeTokenApproveEventArgs as TokenApproveArgs,
-    TestBancorBridgeTokenTransferEventArgs as TokenTransferArgs,
 } from './wrappers';
 
 blockchainTests.resets('Bancor unit tests', env => {
@@ -128,24 +126,6 @@ blockchainTests.resets('Bancor unit tests', env => {
             expect(result).to.eq(AssetProxyId.ERC20Bridge);
         });
 
-        it('performs transfer when both tokens are the same', async () => {
-            const createTokenFn = testContract.createToken(constants.NULL_ADDRESS);
-            const tokenAddress = await createTokenFn.callAsync();
-            await createTokenFn.awaitTransactionSuccessAsync();
-
-            const { opts, result, logs } = await transferFromAsync({
-                tokenAddressesPath: [tokenAddress, tokenAddress],
-            });
-            expect(result).to.eq(AssetProxyId.ERC20Bridge, 'asset proxy id');
-            const transfers = filterLogsToArguments<TokenTransferArgs>(logs, ContractEvents.TokenTransfer);
-
-            expect(transfers.length).to.eq(1);
-            expect(transfers[0].token).to.eq(tokenAddress, 'input token address');
-            expect(transfers[0].from).to.eq(testContract.address);
-            expect(transfers[0].to).to.eq(opts.toAddress, 'recipient address');
-            expect(transfers[0].amount).to.bignumber.eq(opts.amount, 'amount');
-        });
-
         describe('token -> token', async () => {
             it('calls BancorNetwork.convertByPath()', async () => {
                 const { opts, result, logs } = await transferFromAsync();

contracts/asset-proxy/test/wrappers.ts

@@ -7,6 +7,7 @@ export * from '../test/generated-wrappers/balancer_bridge';
 export * from '../test/generated-wrappers/bancor_bridge';
 export * from '../test/generated-wrappers/chai_bridge';
 export * from '../test/generated-wrappers/cream_bridge';
+export * from '../test/generated-wrappers/crypto_com_bridge';
 export * from '../test/generated-wrappers/curve_bridge';
 export * from '../test/generated-wrappers/d_o_d_o_bridge';
 export * from '../test/generated-wrappers/dex_forwarder_bridge';
@@ -45,8 +46,10 @@ export * from '../test/generated-wrappers/mooniswap_bridge';
 export * from '../test/generated-wrappers/multi_asset_proxy';
 export * from '../test/generated-wrappers/ownable';
 export * from '../test/generated-wrappers/shell_bridge';
+export * from '../test/generated-wrappers/snow_swap_bridge';
 export * from '../test/generated-wrappers/static_call_proxy';
 export * from '../test/generated-wrappers/sushi_swap_bridge';
+export * from '../test/generated-wrappers/swerve_bridge';
 export * from '../test/generated-wrappers/test_bancor_bridge';
 export * from '../test/generated-wrappers/test_chai_bridge';
 export * from '../test/generated-wrappers/test_dex_forwarder_bridge';

contracts/asset-proxy/tsconfig.json

@@ -7,6 +7,7 @@
         "generated-artifacts/BancorBridge.json",
         "generated-artifacts/ChaiBridge.json",
         "generated-artifacts/CreamBridge.json",
+        "generated-artifacts/CryptoComBridge.json",
         "generated-artifacts/CurveBridge.json",
         "generated-artifacts/DODOBridge.json",
         "generated-artifacts/DexForwarderBridge.json",
@@ -45,8 +46,10 @@
         "generated-artifacts/MultiAssetProxy.json",
         "generated-artifacts/Ownable.json",
         "generated-artifacts/ShellBridge.json",
+        "generated-artifacts/SnowSwapBridge.json",
         "generated-artifacts/StaticCallProxy.json",
         "generated-artifacts/SushiSwapBridge.json",
+        "generated-artifacts/SwerveBridge.json",
         "generated-artifacts/TestBancorBridge.json",
         "generated-artifacts/TestChaiBridge.json",
         "generated-artifacts/TestDexForwarderBridge.json",
@@ -63,6 +66,7 @@
         "test/generated-artifacts/BancorBridge.json",
         "test/generated-artifacts/ChaiBridge.json",
         "test/generated-artifacts/CreamBridge.json",
+        "test/generated-artifacts/CryptoComBridge.json",
         "test/generated-artifacts/CurveBridge.json",
         "test/generated-artifacts/DODOBridge.json",
         "test/generated-artifacts/DexForwarderBridge.json",
@@ -101,8 +105,10 @@
         "test/generated-artifacts/MultiAssetProxy.json",
         "test/generated-artifacts/Ownable.json",
         "test/generated-artifacts/ShellBridge.json",
+        "test/generated-artifacts/SnowSwapBridge.json",
         "test/generated-artifacts/StaticCallProxy.json",
         "test/generated-artifacts/SushiSwapBridge.json",
+        "test/generated-artifacts/SwerveBridge.json",
         "test/generated-artifacts/TestBancorBridge.json",
         "test/generated-artifacts/TestChaiBridge.json",
         "test/generated-artifacts/TestDexForwarderBridge.json",

contracts/broker/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "1.1.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "1.1.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "1.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "1.1.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "1.1.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "1.1.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "1.1.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "1.1.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "1.1.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "1.1.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "1.1.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "1.1.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "1.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "1.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "1.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "1.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "1.1.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "1.1.7",

contracts/broker/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.1.24 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v1.1.23 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v1.1.22 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v1.1.21 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v1.1.20 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v1.1.19 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v1.1.18 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v1.1.17 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v1.1.16 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v1.1.15 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v1.1.14 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v1.1.13 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v1.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v1.1.11 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v1.1.10 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v1.1.9 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v1.1.8 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v1.1.7 - _October 21, 2020_
 
     * Dependencies updated

contracts/broker/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-broker",
-    "version": "1.1.7",
+    "version": "1.1.24",
     "engines": {
         "node": ">=6.12"
     },
@@ -51,20 +51,20 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-erc721": "^3.1.8",
+        "@0x/contracts-erc721": "^3.1.24",
-        "@0x/contracts-exchange": "^3.2.8",
+        "@0x/contracts-exchange": "^3.2.25",
-        "@0x/contracts-exchange-libs": "^4.3.8",
+        "@0x/contracts-exchange-libs": "^4.3.24",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -84,11 +84,11 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "ethereum-types": "^3.3.3"
+        "ethereum-types": "^3.4.0"
     },
     "publishConfig": {
         "access": "public"

contracts/coordinator/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "3.1.25",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "3.1.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "3.1.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "3.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "3.1.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "3.1.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "3.1.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "3.1.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "3.1.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "3.1.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "3.1.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "3.1.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "3.1.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "3.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.1.8",

contracts/coordinator/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.1.25 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v3.1.24 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v3.1.23 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v3.1.22 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v3.1.21 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v3.1.20 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v3.1.19 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v3.1.18 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v3.1.17 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v3.1.16 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.15 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v3.1.14 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v3.1.13 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/coordinator/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-coordinator",
-    "version": "3.1.8",
+    "version": "3.1.25",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,17 +52,17 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-dev-utils": "^1.3.6",
+        "@0x/contracts-dev-utils": "^1.3.23",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -82,17 +82,17 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.13",
+        "@0x/assert": "^3.0.21",
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contract-addresses": "^4.12.0",
+        "@0x/contract-addresses": "^5.10.0",
-        "@0x/contracts-exchange": "^3.2.8",
+        "@0x/contracts-exchange": "^3.2.25",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/json-schemas": "^5.2.3",
+        "@0x/json-schemas": "^5.4.1",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "http-status-codes": "^1.3.2"
     },
     "publishConfig": {

contracts/dev-utils/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "1.3.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "1.3.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "1.3.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "1.3.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "1.3.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "1.3.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "1.3.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "1.3.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "1.3.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "1.3.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "1.3.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "1.3.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "1.3.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "1.3.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "1.3.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "1.3.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "1.3.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "1.3.6",

contracts/dev-utils/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.3.23 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v1.3.22 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v1.3.21 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v1.3.20 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v1.3.19 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v1.3.18 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v1.3.17 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v1.3.16 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v1.3.15 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v1.3.14 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v1.3.13 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v1.3.12 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v1.3.11 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v1.3.10 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v1.3.9 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v1.3.8 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v1.3.7 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v1.3.6 - _October 21, 2020_
 
     * Dependencies updated

contracts/dev-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-dev-utils",
-    "version": "1.3.6",
+    "version": "1.3.23",
     "engines": {
         "node": ">=6.12"
     },
@@ -41,18 +41,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/dev-utils",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/assert": "^3.0.13",
+        "@0x/assert": "^3.0.21",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "ethers": "~4.0.4",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
@@ -63,7 +63,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
         "@types/node": "12.12.54"
     },
     "publishConfig": {

contracts/erc1155/CHANGELOG.json

@@ -1,4 +1,148 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "2.1.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "2.1.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "2.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "2.1.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "2.1.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "2.1.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "2.1.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "2.1.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "2.1.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "2.1.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "2.1.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "2.1.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "2.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "2.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "2.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "2.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "2.1.8",

contracts/erc1155/CHANGELOG.md

@@ -5,6 +5,70 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.1.24 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v2.1.23 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v2.1.22 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v2.1.21 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v2.1.20 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v2.1.19 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v2.1.18 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v2.1.17 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v2.1.16 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v2.1.15 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v2.1.14 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v2.1.13 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v2.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v2.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v2.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/erc1155/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc1155",
-    "version": "2.1.8",
+    "version": "2.1.24",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,15 +52,15 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -68,7 +68,7 @@
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
         "npm-run-all": "^4.1.2",
@@ -80,10 +80,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "lodash": "^4.17.11"
     },
     "publishConfig": {

contracts/erc20/CHANGELOG.json

@@ -1,4 +1,153 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "3.3.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "3.3.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "3.3.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "3.3.0",
+        "changes": [
+            {
+                "note": "Add SPDX license identifiers to solidity files",
+                "pr": 105
+            },
+            {
+                "note": "Allow for excess return data in `LibERC20TokenV06` compat* functions",
+                "pr": 97
+            }
+        ],
+        "timestamp": 1609802516
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "3.2.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "3.2.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "3.2.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "3.2.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "3.2.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "3.2.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "3.2.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "3.2.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "3.2.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.2.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.2.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.2.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.2.2",

contracts/erc20/CHANGELOG.md

@@ -5,6 +5,71 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.3.3 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v3.3.2 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v3.3.1 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v3.3.0 - _January 4, 2021_
+
+    * Add SPDX license identifiers to solidity files (#105)
+    * Allow for excess return data in `LibERC20TokenV06` compat* functions (#97)
+
+## v3.2.14 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v3.2.13 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v3.2.12 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v3.2.11 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v3.2.10 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.9 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v3.2.8 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v3.2.7 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.6 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.5 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.2.4 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.2.3 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.2.2 - _October 21, 2020_
 
     * Dependencies updated

contracts/erc20/contracts/src/v06/IERC20TokenV06.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2020 ZeroEx Intl.

contracts/erc20/contracts/src/v06/IEtherTokenV06.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2020 ZeroEx Intl.

contracts/erc20/contracts/src/v06/LibERC20TokenV06.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2020 ZeroEx Intl.
@@ -118,7 +119,7 @@ library LibERC20TokenV06 {
     {
         tokenDecimals = 18;
         (bool didSucceed, bytes memory resultData) = address(token).staticcall(DECIMALS_CALL_DATA);
-        if (didSucceed && resultData.length == 32) {
+        if (didSucceed && resultData.length >= 32) {
             tokenDecimals = uint8(LibBytesV06.readUint256(resultData, 0));
         }
     }
@@ -141,7 +142,7 @@ library LibERC20TokenV06 {
                 spender
             )
         );
-        if (didSucceed && resultData.length == 32) {
+        if (didSucceed && resultData.length >= 32) {
             allowance_ = LibBytesV06.readUint256(resultData, 0);
         }
     }
@@ -162,7 +163,7 @@ library LibERC20TokenV06 {
                 owner
             )
         );
-        if (didSucceed && resultData.length == 32) {
+        if (didSucceed && resultData.length >= 32) {
             balance = LibBytesV06.readUint256(resultData, 0);
         }
     }
@@ -180,7 +181,7 @@ library LibERC20TokenV06 {
         if (resultData.length == 0) {
             return true;
         }
-        if (resultData.length == 32) {
+        if (resultData.length >= 32) {
             uint256 result = LibBytesV06.readUint256(resultData, 0);
             if (result == 1) {
                 return true;

contracts/erc20/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "3.2.2",
+    "version": "3.3.3",
     "engines": {
         "node": ">=6.12"
     },
@@ -51,18 +51,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -70,7 +70,7 @@
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "lodash": "^4.17.11",
         "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
@@ -82,7 +82,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7"
+        "@0x/base-contract": "^6.2.18"
     },
     "publishConfig": {
         "access": "public"

contracts/erc721/CHANGELOG.json

@@ -1,4 +1,148 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "3.1.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "3.1.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "3.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "3.1.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "3.1.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "3.1.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "3.1.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "3.1.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "3.1.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "3.1.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "3.1.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "3.1.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "3.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.1.8",

contracts/erc721/CHANGELOG.md

@@ -5,6 +5,70 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.1.24 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v3.1.23 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v3.1.22 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v3.1.21 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v3.1.20 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v3.1.19 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v3.1.18 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v3.1.17 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v3.1.16 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.15 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v3.1.14 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v3.1.13 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/erc721/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc721",
-    "version": "3.1.8",
+    "version": "3.1.24",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,18 +52,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -71,7 +71,7 @@
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "lodash": "^4.17.11",
         "make-promises-safe": "^1.1.0",
         "mocha": "^6.2.0",
@@ -84,7 +84,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7"
+        "@0x/base-contract": "^6.2.18"
     },
     "publishConfig": {
         "access": "public"

contracts/exchange-forwarder/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "4.2.25",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "4.2.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "4.2.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "4.2.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "4.2.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "4.2.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "4.2.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "4.2.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "4.2.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "4.2.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "4.2.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "4.2.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "4.2.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "4.2.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.2.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.2.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.2.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "4.2.8",

contracts/exchange-forwarder/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.2.25 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v4.2.24 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v4.2.23 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v4.2.22 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v4.2.21 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v4.2.20 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v4.2.19 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v4.2.18 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v4.2.17 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v4.2.16 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v4.2.15 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v4.2.14 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v4.2.13 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.2.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.2.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.2.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.2.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.2.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/exchange-forwarder/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-forwarder",
-    "version": "4.2.8",
+    "version": "4.2.25",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,25 +52,25 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-dev-utils": "^1.3.6",
+        "@0x/contracts-dev-utils": "^1.3.23",
-        "@0x/contracts-erc1155": "^2.1.8",
+        "@0x/contracts-erc1155": "^2.1.24",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-erc721": "^3.1.8",
+        "@0x/contracts-erc721": "^3.1.24",
-        "@0x/contracts-exchange": "^3.2.8",
+        "@0x/contracts-exchange": "^3.2.25",
-        "@0x/contracts-exchange-libs": "^4.3.8",
+        "@0x/contracts-exchange-libs": "^4.3.24",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -90,9 +90,9 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "ethereum-types": "^3.3.3"
+        "ethereum-types": "^3.4.0"
     },
     "publishConfig": {
         "access": "public"

contracts/exchange-libs/CHANGELOG.json

@@ -1,4 +1,148 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "4.3.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "4.3.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "4.3.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "4.3.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "4.3.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "4.3.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "4.3.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "4.3.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "4.3.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "4.3.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "4.3.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "4.3.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "4.3.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.3.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.3.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.3.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "4.3.8",

contracts/exchange-libs/CHANGELOG.md

@@ -5,6 +5,70 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.3.24 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v4.3.23 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v4.3.22 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v4.3.21 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v4.3.20 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v4.3.19 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v4.3.18 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v4.3.17 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v4.3.16 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v4.3.15 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v4.3.14 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v4.3.13 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.3.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.3.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.3.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.3.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.3.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/exchange-libs/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-libs",
-    "version": "4.3.8",
+    "version": "4.3.24",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,14 +52,14 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/libs",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
-        "@0x/subproviders": "^6.1.5",
+        "@0x/subproviders": "^6.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -80,14 +80,14 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "ethereum-types": "^3.3.3"
+        "ethereum-types": "^3.4.0"
     },
     "publishConfig": {
         "access": "public"

contracts/exchange/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "3.2.25",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "3.2.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "3.2.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "3.2.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "3.2.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "3.2.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "3.2.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "3.2.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "3.2.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "3.2.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "3.2.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "3.2.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "3.2.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "3.2.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "3.2.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "3.2.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "3.2.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "3.2.8",

contracts/exchange/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.2.25 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v3.2.24 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v3.2.23 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v3.2.22 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v3.2.21 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v3.2.20 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v3.2.19 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v3.2.18 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v3.2.17 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v3.2.16 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.15 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v3.2.14 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v3.2.13 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v3.2.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v3.2.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v3.2.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v3.2.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/exchange/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange",
-    "version": "3.2.8",
+    "version": "3.2.25",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,21 +52,21 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/protocol",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-exchange-libs": "^4.3.8",
+        "@0x/contracts-exchange-libs": "^4.3.24",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-multisig": "^4.1.8",
+        "@0x/contracts-multisig": "^4.1.25",
-        "@0x/contracts-staking": "^2.0.15",
+        "@0x/contracts-staking": "^2.0.32",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -74,7 +74,7 @@
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^3.0.0",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "ethereumjs-util": "^5.1.1",
         "js-combinatorics": "^0.5.3",
         "make-promises-safe": "^1.1.0",
@@ -88,13 +88,13 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-dev-utils": "^1.3.6",
+        "@0x/contracts-dev-utils": "^1.3.23",
-        "@0x/contracts-erc1155": "^2.1.8",
+        "@0x/contracts-erc1155": "^2.1.24",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-erc721": "^3.1.8",
+        "@0x/contracts-erc721": "^3.1.24",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
         "lodash": "^4.17.11"
     },
     "publishConfig": {

contracts/extensions/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "6.2.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "6.2.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "6.2.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "6.2.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "6.2.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "6.2.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "6.2.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "6.2.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "6.2.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "6.2.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "6.2.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "6.2.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "6.2.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "6.2.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "6.2.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "6.2.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "6.2.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "6.2.2",

contracts/extensions/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.2.19 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v6.2.18 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v6.2.17 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v6.2.16 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v6.2.15 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v6.2.14 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v6.2.13 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v6.2.12 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v6.2.11 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v6.2.10 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v6.2.9 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v6.2.8 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v6.2.7 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v6.2.6 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v6.2.5 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v6.2.4 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v6.2.3 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v6.2.2 - _October 21, 2020_
 
     * Dependencies updated

contracts/extensions/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-extensions",
-    "version": "6.2.2",
+    "version": "6.2.19",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,23 +52,23 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-dev-utils": "^1.3.6",
+        "@0x/contracts-dev-utils": "^1.3.23",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-erc721": "^3.1.8",
+        "@0x/contracts-erc721": "^3.1.24",
-        "@0x/contracts-exchange": "^3.2.8",
+        "@0x/contracts-exchange": "^3.2.25",
-        "@0x/contracts-exchange-libs": "^4.3.8",
+        "@0x/contracts-exchange-libs": "^4.3.24",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -90,10 +90,10 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "ethereum-types": "^3.3.3"
+        "ethereum-types": "^3.4.0"
     },
     "publishConfig": {
         "access": "public"

contracts/integrations/CHANGELOG.json

@@ -1,4 +1,85 @@
 [
+    {
+        "timestamp": 1605763885,
+        "version": "2.7.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605320370,
+        "version": "2.7.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "2.7.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604620645,
+        "version": "2.7.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "2.7.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "2.7.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "2.7.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "2.7.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "2.7.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603487270,
         "version": "2.7.1",

contracts/integrations/CHANGELOG.md

@@ -5,6 +5,42 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.7.10 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v2.7.9 - _November 14, 2020_
+
+    * Dependencies updated
+
+## v2.7.8 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v2.7.7 - _November 5, 2020_
+
+    * Dependencies updated
+
+## v2.7.6 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.7.5 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.7.4 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v2.7.3 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v2.7.2 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v2.7.1 - _October 23, 2020_
 
     * Dependencies updated

contracts/integrations/contracts/test/TestFixinProtocolFeesIntegration.sol

@@ -0,0 +1,39 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+
+import "@0x/contracts-zero-ex/contracts/test/TestFixinProtocolFees.sol";
+import "@0x/contracts-zero-ex/contracts/src/external/FeeCollectorController.sol";
+
+
+contract TestFixinProtocolFeesIntegration is TestFixinProtocolFees {
+    constructor(
+        IEtherTokenV06 weth,
+        IStaking staking,
+        uint32 protocolFeeMultiplier
+    )
+        public
+        TestFixinProtocolFees(
+            weth,
+            staking,
+            new FeeCollectorController(weth, staking),
+            protocolFeeMultiplier
+        )
+    {}
+}

contracts/integrations/contracts/test/TestStaking.sol

@@ -0,0 +1,110 @@
+/*
+
+  Copyright 2019 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.5.9;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-staking/contracts/src/Staking.sol";
+
+
+contract TestStaking is
+    Staking
+{
+    IEtherToken public testWeth;
+
+    struct TestPool {
+        uint96 operatorStake;
+        uint96 membersStake;
+    }
+
+    mapping(bytes32 => TestPool) private _testPools;
+
+    constructor(address exchangeAddress, IEtherToken _testWeth) public {
+        testWeth = _testWeth;
+
+        _addAuthorizedAddress(msg.sender);
+        init();
+        validExchanges[exchangeAddress] = true;
+        _removeAuthorizedAddressAtIndex(msg.sender, 0);
+    }
+
+    function advanceEpoch()
+        external
+    {
+        currentEpoch += 1;
+    }
+
+    /// @dev Create a test pool.
+    function createTestPool(
+        bytes32 poolId,
+        uint96 operatorStake,
+        uint96 membersStake
+    )
+        external
+    {
+        TestPool storage pool = _testPools[poolId];
+        pool.operatorStake = operatorStake;
+        pool.membersStake = membersStake;
+    }
+
+    function getAggregatedStatsForCurrentEpoch()
+        external
+        view
+        returns (IStructs.AggregatedStats memory)
+    {
+        return aggregatedStatsByEpoch[currentEpoch];
+    }
+
+    /// @dev Overridden to use test pools.
+    function getTotalStakeDelegatedToPool(bytes32 poolId)
+        public
+        view
+        returns (IStructs.StoredBalance memory balance)
+    {
+        TestPool memory pool = _testPools[poolId];
+        uint96 stake = pool.operatorStake + pool.membersStake;
+        return IStructs.StoredBalance({
+            currentEpoch: currentEpoch.downcastToUint64(),
+            currentEpochBalance: stake,
+            nextEpochBalance: stake
+        });
+    }
+
+    /// @dev Overridden to use test pools.
+    function getStakeDelegatedToPoolByOwner(address, bytes32 poolId)
+        public
+        view
+        returns (IStructs.StoredBalance memory balance)
+    {
+        TestPool memory pool = _testPools[poolId];
+        return IStructs.StoredBalance({
+            currentEpoch: currentEpoch.downcastToUint64(),
+            currentEpochBalance: pool.operatorStake,
+            nextEpochBalance: pool.operatorStake
+        });
+    }
+
+    function getWethContract()
+        public
+        view
+        returns (IEtherToken wethContract)
+    {
+        return testWeth;
+    }
+}
+

contracts/integrations/contracts/test/TestWethIntegration.sol

@@ -0,0 +1,24 @@
+/*
+
+  Copyright 2020 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.5;
+
+import "@0x/contracts-zero-ex/contracts/test/TestWeth.sol";
+
+
+contract TestWethIntegration is TestWeth {}

contracts/integrations/package.json

@@ -1,6 +1,7 @@
 {
     "name": "@0x/contracts-integrations",
-    "version": "2.7.1",
+    "version": "2.7.26",
+    "private": true,
     "engines": {
         "node": ">=6.12"
     },
@@ -38,7 +39,7 @@
     },
     "config": {
         "publicInterfaceContracts": "TestFramework",
-        "abis": "./test/generated-artifacts/@(ChainlinkStopLimit|IChainlinkAggregator|TestChainlinkAggregator|TestContractWrapper|TestDydxUser|TestEth2Dai|TestEth2DaiBridge|TestFramework|TestMainnetAggregatorFills|TestSignatureValidationWallet|TestUniswapBridge|TestUniswapExchange|TestUniswapExchangeFactory).json",
+        "abis": "./test/generated-artifacts/@(ChainlinkStopLimit|IChainlinkAggregator|TestChainlinkAggregator|TestContractWrapper|TestDydxUser|TestEth2Dai|TestEth2DaiBridge|TestFixinProtocolFeesIntegration|TestFramework|TestMainnetAggregatorFills|TestSignatureValidationWallet|TestStaking|TestUniswapBridge|TestUniswapExchange|TestUniswapExchangeFactory|TestWethIntegration).json",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually."
     },
     "repository": {
@@ -51,24 +52,25 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contract-addresses": "^4.12.0",
+        "@0x/contract-addresses": "^5.10.0",
-        "@0x/contract-wrappers": "^13.9.0",
+        "@0x/contract-wrappers": "^13.12.3",
-        "@0x/contracts-broker": "^1.1.7",
+        "@0x/contracts-broker": "^1.1.24",
-        "@0x/contracts-coordinator": "^3.1.8",
+        "@0x/contracts-coordinator": "^3.1.25",
-        "@0x/contracts-dev-utils": "^1.3.6",
+        "@0x/contracts-dev-utils": "^1.3.23",
-        "@0x/contracts-exchange-forwarder": "^4.2.8",
+        "@0x/contracts-exchange-forwarder": "^4.2.25",
-        "@0x/contracts-exchange-libs": "^4.3.8",
+        "@0x/contracts-exchange-libs": "^4.3.24",
-        "@0x/contracts-extensions": "^6.2.2",
+        "@0x/contracts-extensions": "^6.2.19",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
         "@0x/coordinator-server": "^1.0.5",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/migrations": "^6.4.2",
+        "@0x/migrations": "^6.6.0",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/protocol-utils": "^1.2.0",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@azure/core-asynciterator-polyfill": "^1.0.0",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
@@ -91,22 +93,22 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/asset-swapper": "^4.7.1",
+        "@0x/asset-swapper": "^6.0.0",
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-erc1155": "^2.1.8",
+        "@0x/contracts-erc1155": "^2.1.24",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-erc721": "^3.1.8",
+        "@0x/contracts-erc721": "^3.1.24",
-        "@0x/contracts-exchange": "^3.2.8",
+        "@0x/contracts-exchange": "^3.2.25",
-        "@0x/contracts-multisig": "^4.1.8",
+        "@0x/contracts-multisig": "^4.1.25",
-        "@0x/contracts-staking": "^2.0.15",
+        "@0x/contracts-staking": "^2.0.32",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-zero-ex": "^0.4.0",
+        "@0x/contracts-zero-ex": "^0.18.2",
-        "@0x/subproviders": "^6.1.5",
+        "@0x/subproviders": "^6.4.1",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "ethereumjs-util": "^6.2.0",
         "lodash": "^4.17.11"
     },

contracts/integrations/test/aggregation/fill_test.ts

@@ -1,239 +0,0 @@
-import { MarketBuySwapQuote, MarketSellSwapQuote, Orderbook, SwapQuoter } from '@0x/asset-swapper';
-import { blockchainTests, expect, Numberish } from '@0x/contracts-test-utils';
-import { assetDataUtils } from '@0x/order-utils';
-import { FillResults, SignedOrder } from '@0x/types';
-import { BigNumber, logUtils } from '@0x/utils';
-import * as _ from 'lodash';
-
-import { TestMainnetAggregatorFillsContract } from '../wrappers';
-
-import { tokens } from './tokens';
-
-blockchainTests.live('Aggregator Mainnet Tests', env => {
-    // Mainnet address of the `TestMainnetAggregatorFills` contract.
-    const TEST_CONTRACT_ADDRESS = '0x37Ca306F42748b7fe105F89FCBb2CD03D27c8146';
-    const TAKER_ADDRESS = '0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B'; // Vitalik
-    const ORDERBOOK_POLLING_MS = 1000;
-    const GAS_PRICE = new BigNumber(1);
-    const TAKER_ASSET_ETH_VALUE = 500e18;
-    const MIN_BALANCE = 500.1e18;
-    const SYMBOLS = ['ETH', 'DAI', 'USDC', 'FOAM'];
-    const TEST_PAIRS = _.flatten(SYMBOLS.map(m => SYMBOLS.filter(t => t !== m).map(t => [m, t])));
-    const FILL_VALUES = [1, 10, 1e2, 1e3, 1e4, 2.5e4, 5e4];
-
-    let testContract: TestMainnetAggregatorFillsContract;
-    let swapQuoter: SwapQuoter;
-    let takerEthBalance: BigNumber;
-    const orderbooks: { [name: string]: Orderbook } = {};
-
-    async function getTakerOrdersAsync(takerAssetSymbol: string): Promise<SignedOrder[]> {
-        if (takerAssetSymbol === 'ETH') {
-            return [];
-        }
-        return getOrdersAsync(takerAssetSymbol, 'ETH');
-    }
-
-    // Fetches ETH -> taker asset orders for the forwarder contract.
-    async function getOrdersAsync(makerAssetSymbol: string, takerAssetSymbol: string): Promise<SignedOrder[]> {
-        const takerTokenAddress = tokens[takerAssetSymbol].address;
-        const makerTokenAddress = tokens[makerAssetSymbol].address;
-        const makerAssetData = assetDataUtils.encodeERC20AssetData(makerTokenAddress);
-        const takerAssetData = assetDataUtils.encodeERC20AssetData(takerTokenAddress);
-        const orders = _.flatten(
-            await Promise.all(
-                Object.keys(orderbooks).map(async name =>
-                    getOrdersFromOrderBookAsync(name, makerAssetData, takerAssetData),
-                ),
-            ),
-        );
-        const uniqueOrders: SignedOrder[] = [];
-        for (const order of orders) {
-            if (!order.makerFee.eq(0) || !order.takerFee.eq(0)) {
-                continue;
-            }
-            if (uniqueOrders.findIndex(o => isSameOrder(order, o)) === -1) {
-                uniqueOrders.push(order);
-            }
-        }
-        return uniqueOrders;
-    }
-
-    async function getOrdersFromOrderBookAsync(
-        name: string,
-        makerAssetData: string,
-        takerAssetData: string,
-    ): Promise<SignedOrder[]> {
-        try {
-            return (await orderbooks[name].getOrdersAsync(makerAssetData, takerAssetData)).map(r => r.order);
-        } catch (err) {
-            logUtils.warn(`Failed to retrieve orders from orderbook "${name}".`);
-        }
-        return [];
-    }
-
-    function isSameOrder(a: SignedOrder, b: SignedOrder): boolean {
-        for (const [k, v] of Object.entries(a)) {
-            if (k in (b as any)) {
-                if (BigNumber.isBigNumber(v) && !v.eq((b as any)[k])) {
-                    return false;
-                }
-                if (v !== (b as any)[k]) {
-                    return false;
-                }
-            }
-        }
-        return true;
-    }
-
-    function toTokenUnits(symbol: string, weis: Numberish): BigNumber {
-        return new BigNumber(weis).div(new BigNumber(10).pow(tokens[symbol].decimals));
-    }
-
-    function fromTokenUnits(symbol: string, units: Numberish): BigNumber {
-        return new BigNumber(units)
-            .times(new BigNumber(10).pow(tokens[symbol].decimals))
-            .integerValue(BigNumber.ROUND_DOWN);
-    }
-
-    interface MarketOperationResult {
-        makerAssetBalanceBefore: BigNumber;
-        takerAssetBalanceBefore: BigNumber;
-        makerAssetBalanceAfter: BigNumber;
-        takerAssetBalanceAfter: BigNumber;
-        fillResults: FillResults;
-    }
-
-    // Liquidity is low right now so it's possible we didn't have
-    // enough taker assets to cover the orders, so occasionally we'll get incomplete
-    // fills. This function will catch those cases.
-    // TODO(dorothy-zbornak): Remove this special case when liquidity is up.
-    function checkHadEnoughTakerAsset(
-        quote: MarketBuySwapQuote | MarketSellSwapQuote,
-        result: MarketOperationResult,
-    ): boolean {
-        if (result.takerAssetBalanceBefore.gte(quote.worstCaseQuoteInfo.takerAssetAmount)) {
-            return true;
-        }
-        const takerAssetPct = result.takerAssetBalanceBefore
-            .div(quote.worstCaseQuoteInfo.takerAssetAmount)
-            .times(100)
-            .toNumber()
-            .toFixed(1);
-        logUtils.warn(`Could not acquire enough taker asset to complete the fill: ${takerAssetPct}%`);
-        expect(result.fillResults.makerAssetFilledAmount).to.bignumber.lt(quote.worstCaseQuoteInfo.makerAssetAmount);
-        return false;
-    }
-
-    before(async () => {
-        testContract = new TestMainnetAggregatorFillsContract(TEST_CONTRACT_ADDRESS, env.provider, {
-            ...env.txDefaults,
-            gasPrice: GAS_PRICE,
-            gas: 10e6,
-        });
-        swapQuoter = SwapQuoter.getSwapQuoterForStandardRelayerAPIUrl(env.provider, 'https://api.0x.org/sra');
-        // Pool orderbooks because we're desperate for liquidity.
-        orderbooks.swapQuoter = swapQuoter.orderbook;
-        orderbooks.bamboo = Orderbook.getOrderbookForPollingProvider({
-            httpEndpoint: 'https://sra.bamboorelay.com/0x/v3',
-            pollingIntervalMs: ORDERBOOK_POLLING_MS,
-        });
-        // TODO(dorothy-zbornak): Uncomment when radar's SRA is up.
-        // orderbooks.radar = Orderbook.getOrderbookForPollingProvider({
-        //     httpEndpoint: 'https://api-v3.radarrelay.com/v3',
-        //     pollingIntervalMs: ORDERBOOK_POLLING_MS,
-        // });
-        takerEthBalance = await env.web3Wrapper.getBalanceInWeiAsync(TAKER_ADDRESS);
-    });
-
-    it('taker has minimum ETH', async () => {
-        expect(takerEthBalance).to.bignumber.gte(MIN_BALANCE);
-    });
-
-    describe('market sells', () => {
-        for (const [makerSymbol, takerSymbol] of TEST_PAIRS) {
-            for (const fillValue of FILL_VALUES) {
-                const fillAmount = fromTokenUnits(takerSymbol, new BigNumber(fillValue).div(tokens[takerSymbol].price));
-                it(`sell ${toTokenUnits(takerSymbol, fillAmount)} ${takerSymbol} for ${makerSymbol}`, async () => {
-                    const [quote, takerOrders] = await Promise.all([
-                        swapQuoter.getMarketSellSwapQuoteAsync(
-                            tokens[makerSymbol].address,
-                            tokens[takerSymbol].address,
-                            fillAmount,
-                            { gasPrice: GAS_PRICE },
-                        ),
-                        getTakerOrdersAsync(takerSymbol),
-                    ]);
-                    // Buy taker assets from `takerOrders` and and perform a
-                    // market sell on the bridge orders.
-                    const fill = await testContract
-                        .marketSell(
-                            tokens[makerSymbol].address,
-                            tokens[takerSymbol].address,
-                            quote.orders,
-                            takerOrders,
-                            quote.orders.map(o => o.signature),
-                            takerOrders.map(o => o.signature),
-                            quote.takerAssetFillAmount,
-                        )
-                        .callAsync({
-                            value: quote.worstCaseQuoteInfo.protocolFeeInWeiAmount.plus(TAKER_ASSET_ETH_VALUE),
-                            from: TAKER_ADDRESS,
-                            gasPrice: quote.gasPrice,
-                        });
-                    if (checkHadEnoughTakerAsset(quote, fill)) {
-                        expect(fill.fillResults.makerAssetFilledAmount, 'makerAssetFilledAmount').to.bignumber.gte(
-                            quote.worstCaseQuoteInfo.makerAssetAmount,
-                        );
-                        expect(fill.fillResults.takerAssetFilledAmount, 'takerAssetFilledAmount').to.bignumber.lte(
-                            quote.takerAssetFillAmount,
-                        );
-                    }
-                });
-            }
-        }
-    });
-
-    describe('market buys', () => {
-        for (const [makerSymbol, takerSymbol] of TEST_PAIRS) {
-            for (const fillValue of FILL_VALUES) {
-                const fillAmount = fromTokenUnits(makerSymbol, new BigNumber(fillValue).div(tokens[makerSymbol].price));
-                it(`buy ${toTokenUnits(makerSymbol, fillAmount)} ${makerSymbol} with ${takerSymbol}`, async () => {
-                    const [quote, takerOrders] = await Promise.all([
-                        swapQuoter.getMarketBuySwapQuoteAsync(
-                            tokens[makerSymbol].address,
-                            tokens[takerSymbol].address,
-                            fillAmount,
-                            { gasPrice: GAS_PRICE },
-                        ),
-                        getTakerOrdersAsync(takerSymbol),
-                    ]);
-                    // Buy taker assets from `takerOrders` and and perform a
-                    // market buy on the bridge orders.
-                    const fill = await testContract
-                        .marketBuy(
-                            tokens[makerSymbol].address,
-                            tokens[takerSymbol].address,
-                            quote.orders,
-                            takerOrders,
-                            quote.orders.map(o => o.signature),
-                            takerOrders.map(o => o.signature),
-                            quote.makerAssetFillAmount,
-                        )
-                        .callAsync({
-                            value: quote.worstCaseQuoteInfo.protocolFeeInWeiAmount.plus(TAKER_ASSET_ETH_VALUE),
-                            from: TAKER_ADDRESS,
-                            gasPrice: quote.gasPrice,
-                        });
-                    if (checkHadEnoughTakerAsset(quote, fill)) {
-                        expect(fill.fillResults.takerAssetFilledAmount, 'takerAssetFilledAmount').to.bignumber.lte(
-                            quote.worstCaseQuoteInfo.takerAssetAmount,
-                        );
-                        expect(fill.fillResults.makerAssetFilledAmount, 'makerAssetFilledAmount').to.bignumber.gte(
-                            quote.makerAssetFillAmount,
-                        );
-                    }
-                });
-            }
-        }
-    });
-});

contracts/integrations/test/aggregation/tokens.ts

@@ -1,77 +0,0 @@
-export const tokens: { [symbol: string]: { address: string; decimals: number; price: number } } = {
-    ETH: {
-        address: '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2',
-        decimals: 18,
-        price: 133,
-    },
-    SAI: {
-        address: '0x89d24A6b4CcB1B6fAA2625fE562bDD9a23260359',
-        decimals: 18,
-        price: 1,
-    },
-    DAI: {
-        address: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
-        decimals: 18,
-        price: 1,
-    },
-    USDC: {
-        address: '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48',
-        decimals: 6,
-        price: 1,
-    },
-    WBTC: {
-        address: '0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599',
-        decimals: 8,
-        price: 6900,
-    },
-    MKR: {
-        address: '0x9f8F72aA9304c8B593d555F12eF6589cC3A579A2',
-        decimals: 18,
-        price: 454,
-    },
-    BAT: {
-        address: '0x0D8775F648430679A709E98d2b0Cb6250d2887EF',
-        decimals: 18,
-        price: 0.17,
-    },
-    OMG: {
-        address: '0xd26114cd6EE289AccF82350c8d8487fedB8A0C07',
-        decimals: 18,
-        price: 0.65,
-    },
-    ZRX: {
-        address: '0xE41d2489571d322189246DaFA5ebDe1F4699F498',
-        decimals: 18,
-        price: 0.19,
-    },
-    ZIL: {
-        address: '0x05f4a42e251f2d52b8ed15E9FEdAacFcEF1FAD27',
-        decimals: 12,
-        price: 0.004,
-    },
-    FOAM: {
-        address: '0x4946Fcea7C692606e8908002e55A582af44AC121',
-        decimals: 18,
-        price: 0.004,
-    },
-    USDT: {
-        address: '0xdAC17F958D2ee523a2206206994597C13D831ec7',
-        decimals: 6,
-        price: 0.019,
-    },
-    REP: {
-        address: '0x1985365e9f78359a9B6AD760e32412f4a445E862',
-        decimals: 18,
-        price: 8.9,
-    },
-    MANA: {
-        address: '0x0F5D2fB29fb7d3CFeE444a200298f468908cC942',
-        decimals: 18,
-        price: 0.025,
-    },
-    LINK: {
-        address: '0x514910771AF9Ca656af840dff83E8264EcF986CA',
-        decimals: 18,
-        price: 1.8,
-    },
-};

contracts/integrations/test/artifacts.ts

@@ -12,12 +12,15 @@ import * as TestContractWrapper from '../test/generated-artifacts/TestContractWr
 import * as TestDydxUser from '../test/generated-artifacts/TestDydxUser.json';
 import * as TestEth2Dai from '../test/generated-artifacts/TestEth2Dai.json';
 import * as TestEth2DaiBridge from '../test/generated-artifacts/TestEth2DaiBridge.json';
+import * as TestFixinProtocolFeesIntegration from '../test/generated-artifacts/TestFixinProtocolFeesIntegration.json';
 import * as TestFramework from '../test/generated-artifacts/TestFramework.json';
 import * as TestMainnetAggregatorFills from '../test/generated-artifacts/TestMainnetAggregatorFills.json';
 import * as TestSignatureValidationWallet from '../test/generated-artifacts/TestSignatureValidationWallet.json';
+import * as TestStaking from '../test/generated-artifacts/TestStaking.json';
 import * as TestUniswapBridge from '../test/generated-artifacts/TestUniswapBridge.json';
 import * as TestUniswapExchange from '../test/generated-artifacts/TestUniswapExchange.json';
 import * as TestUniswapExchangeFactory from '../test/generated-artifacts/TestUniswapExchangeFactory.json';
+import * as TestWethIntegration from '../test/generated-artifacts/TestWethIntegration.json';
 export const artifacts = {
     ChainlinkStopLimit: ChainlinkStopLimit as ContractArtifact,
     IChainlinkAggregator: IChainlinkAggregator as ContractArtifact,
@@ -26,10 +29,13 @@ export const artifacts = {
     TestDydxUser: TestDydxUser as ContractArtifact,
     TestEth2Dai: TestEth2Dai as ContractArtifact,
     TestEth2DaiBridge: TestEth2DaiBridge as ContractArtifact,
+    TestFixinProtocolFeesIntegration: TestFixinProtocolFeesIntegration as ContractArtifact,
     TestFramework: TestFramework as ContractArtifact,
     TestMainnetAggregatorFills: TestMainnetAggregatorFills as ContractArtifact,
     TestSignatureValidationWallet: TestSignatureValidationWallet as ContractArtifact,
+    TestStaking: TestStaking as ContractArtifact,
     TestUniswapBridge: TestUniswapBridge as ContractArtifact,
     TestUniswapExchange: TestUniswapExchange as ContractArtifact,
     TestUniswapExchangeFactory: TestUniswapExchangeFactory as ContractArtifact,
+    TestWethIntegration: TestWethIntegration as ContractArtifact,
 };

contracts/integrations/test/exchange-proxy/mtx_test.ts

@@ -1,426 +0,0 @@
-import { ContractAddresses } from '@0x/contract-addresses';
-import { artifacts as erc20Artifacts, DummyERC20TokenContract } from '@0x/contracts-erc20';
-import { IExchangeContract } from '@0x/contracts-exchange';
-import { blockchainTests, constants, expect, getRandomPortion, verifyEventsFromLogs } from '@0x/contracts-test-utils';
-import {
-    artifacts as exchangeProxyArtifacts,
-    IZeroExContract,
-    LogMetadataTransformerContract,
-    signCallData,
-} from '@0x/contracts-zero-ex';
-import { migrateOnceAsync } from '@0x/migrations';
-import {
-    assetDataUtils,
-    encodeFillQuoteTransformerData,
-    encodePayTakerTransformerData,
-    ETH_TOKEN_ADDRESS,
-    FillQuoteTransformerSide,
-    findTransformerNonce,
-    signatureUtils,
-    SignedExchangeProxyMetaTransaction,
-} from '@0x/order-utils';
-import { AssetProxyId, Order, SignedOrder } from '@0x/types';
-import { BigNumber, hexUtils, ZeroExRevertErrors } from '@0x/utils';
-import * as ethjs from 'ethereumjs-util';
-
-const { MAX_UINT256, NULL_ADDRESS, NULL_BYTES, NULL_BYTES32, ZERO_AMOUNT } = constants;
-
-blockchainTests.resets('exchange proxy - meta-transactions', env => {
-    const quoteSignerKey = hexUtils.random();
-    const quoteSigner = hexUtils.toHex(ethjs.privateToAddress(ethjs.toBuffer(quoteSignerKey)));
-    let owner: string;
-    let relayer: string;
-    let maker: string;
-    let taker: string;
-    let flashWalletAddress: string;
-    let zeroEx: IZeroExContract;
-    let exchange: IExchangeContract;
-    let inputToken: DummyERC20TokenContract;
-    let outputToken: DummyERC20TokenContract;
-    let feeToken: DummyERC20TokenContract;
-    let addresses: ContractAddresses;
-    let protocolFee: BigNumber;
-    let metadataTransformer: LogMetadataTransformerContract;
-    const GAS_PRICE = new BigNumber('1e9');
-    const MAKER_BALANCE = new BigNumber('100e18');
-    const TAKER_BALANCE = new BigNumber('100e18');
-    const TAKER_FEE_BALANCE = new BigNumber('100e18');
-
-    before(async () => {
-        [, relayer, maker, taker] = await env.getAccountAddressesAsync();
-        addresses = await migrateOnceAsync(env.provider);
-        zeroEx = new IZeroExContract(addresses.exchangeProxy, env.provider, env.txDefaults, {
-            LogMetadataTransformer: LogMetadataTransformerContract.ABI(),
-            DummyERC20Token: DummyERC20TokenContract.ABI(),
-        });
-        exchange = new IExchangeContract(addresses.exchange, env.provider, env.txDefaults);
-        [inputToken, outputToken, feeToken] = await Promise.all(
-            [...new Array(3)].map(i =>
-                DummyERC20TokenContract.deployFrom0xArtifactAsync(
-                    erc20Artifacts.DummyERC20Token,
-                    env.provider,
-                    env.txDefaults,
-                    {},
-                    `DummyToken-${i}`,
-                    `TOK${i}`,
-                    new BigNumber(18),
-                    BigNumber.max(MAKER_BALANCE, TAKER_BALANCE),
-                ),
-            ),
-        );
-        // LogMetadataTransformer is not deployed in migrations.
-        metadataTransformer = await LogMetadataTransformerContract.deployFrom0xArtifactAsync(
-            exchangeProxyArtifacts.LogMetadataTransformer,
-            env.provider,
-            {
-                ...env.txDefaults,
-                from: addresses.exchangeProxyTransformerDeployer,
-            },
-            {},
-        );
-        owner = await zeroEx.owner().callAsync();
-        protocolFee = await exchange.protocolFeeMultiplier().callAsync();
-        flashWalletAddress = await zeroEx.getTransformWallet().callAsync();
-        const erc20Proxy = await exchange.getAssetProxy(AssetProxyId.ERC20).callAsync();
-        const allowanceTarget = await zeroEx.getAllowanceTarget().callAsync();
-        await outputToken.mint(MAKER_BALANCE).awaitTransactionSuccessAsync({ from: maker });
-        await inputToken.mint(TAKER_BALANCE).awaitTransactionSuccessAsync({ from: taker });
-        await feeToken.mint(TAKER_FEE_BALANCE).awaitTransactionSuccessAsync({ from: taker });
-        await outputToken.approve(erc20Proxy, MAX_UINT256).awaitTransactionSuccessAsync({ from: maker });
-        await inputToken.approve(allowanceTarget, MAX_UINT256).awaitTransactionSuccessAsync({ from: taker });
-        await feeToken.approve(allowanceTarget, MAX_UINT256).awaitTransactionSuccessAsync({ from: taker });
-        await zeroEx.setQuoteSigner(quoteSigner).awaitTransactionSuccessAsync({ from: owner });
-    });
-
-    interface Transformation {
-        deploymentNonce: number;
-        data: string;
-    }
-
-    interface SwapInfo {
-        inputTokenAddress: string;
-        outputTokenAddress: string;
-        inputTokenAmount: BigNumber;
-        minOutputTokenAmount: BigNumber;
-        transformations: Transformation[];
-        orders: SignedOrder[];
-    }
-
-    async function generateSwapAsync(orderFields: Partial<Order> = {}, isRfqt: boolean = false): Promise<SwapInfo> {
-        const order = await signatureUtils.ecSignTypedDataOrderAsync(
-            env.provider,
-            {
-                chainId: 1337,
-                exchangeAddress: exchange.address,
-                expirationTimeSeconds: new BigNumber(Date.now()),
-                salt: new BigNumber(hexUtils.random()),
-                feeRecipientAddress: NULL_ADDRESS,
-                senderAddress: NULL_ADDRESS,
-                takerAddress: isRfqt ? flashWalletAddress : NULL_ADDRESS,
-                makerAddress: maker,
-                makerAssetData: assetDataUtils.encodeERC20AssetData(outputToken.address),
-                takerAssetData: assetDataUtils.encodeERC20AssetData(inputToken.address),
-                makerFeeAssetData: NULL_BYTES,
-                takerFeeAssetData: NULL_BYTES,
-                takerAssetAmount: getRandomPortion(TAKER_BALANCE),
-                makerAssetAmount: getRandomPortion(MAKER_BALANCE),
-                makerFee: ZERO_AMOUNT,
-                takerFee: ZERO_AMOUNT,
-                ...orderFields,
-            },
-            maker,
-        );
-        const transformations = [
-            {
-                deploymentNonce: findTransformerNonce(
-                    addresses.transformers.fillQuoteTransformer,
-                    addresses.exchangeProxyTransformerDeployer,
-                ),
-                data: encodeFillQuoteTransformerData({
-                    orders: [order],
-                    signatures: [order.signature],
-                    buyToken: outputToken.address,
-                    sellToken: inputToken.address,
-                    fillAmount: order.takerAssetAmount,
-                    maxOrderFillAmounts: [],
-                    refundReceiver: hexUtils.leftPad(2, 20), // Send refund to sender.
-                    rfqtTakerAddress: isRfqt ? taker : NULL_ADDRESS,
-                    side: FillQuoteTransformerSide.Sell,
-                }),
-            },
-            {
-                deploymentNonce: findTransformerNonce(
-                    addresses.transformers.payTakerTransformer,
-                    addresses.exchangeProxyTransformerDeployer,
-                ),
-                data: encodePayTakerTransformerData({
-                    tokens: [inputToken.address, outputToken.address, ETH_TOKEN_ADDRESS],
-                    amounts: [MAX_UINT256, MAX_UINT256, MAX_UINT256],
-                }),
-            },
-            {
-                deploymentNonce: findTransformerNonce(
-                    metadataTransformer.address,
-                    addresses.exchangeProxyTransformerDeployer,
-                ),
-                data: NULL_BYTES,
-            },
-        ];
-        return {
-            transformations,
-            orders: [order],
-            inputTokenAddress: inputToken.address,
-            outputTokenAddress: outputToken.address,
-            inputTokenAmount: order.takerAssetAmount,
-            minOutputTokenAmount: order.makerAssetAmount,
-        };
-    }
-
-    function getSwapData(swap: SwapInfo): string {
-        return zeroEx
-            .transformERC20(
-                swap.inputTokenAddress,
-                swap.outputTokenAddress,
-                swap.inputTokenAmount,
-                swap.minOutputTokenAmount,
-                swap.transformations,
-            )
-            .getABIEncodedTransactionData();
-    }
-
-    function getSignedSwapData(swap: SwapInfo, signerKey?: string): string {
-        return signCallData(
-            zeroEx
-                .transformERC20(
-                    swap.inputTokenAddress,
-                    swap.outputTokenAddress,
-                    swap.inputTokenAmount,
-                    swap.minOutputTokenAmount,
-                    swap.transformations,
-                )
-                .getABIEncodedTransactionData(),
-            signerKey ? signerKey : quoteSignerKey,
-        );
-    }
-
-    async function createMetaTransactionAsync(
-        data: string,
-        value: BigNumber,
-        fee?: BigNumber | number,
-    ): Promise<SignedExchangeProxyMetaTransaction> {
-        return signatureUtils.ecSignTypedDataExchangeProxyMetaTransactionAsync(
-            env.provider,
-            {
-                value,
-                signer: taker,
-                sender: relayer,
-                minGasPrice: GAS_PRICE,
-                maxGasPrice: GAS_PRICE,
-                expirationTimeSeconds: new BigNumber(Math.floor(Date.now() / 1000) + 60),
-                salt: new BigNumber(hexUtils.random()),
-                callData: data,
-                feeToken: feeToken.address,
-                feeAmount: fee !== undefined ? new BigNumber(fee) : getRandomPortion(TAKER_FEE_BALANCE),
-                domain: {
-                    chainId: 1,
-                    name: 'ZeroEx',
-                    version: '1.0.0',
-                    verifyingContract: zeroEx.address,
-                },
-            },
-            taker,
-        );
-    }
-
-    it('can call `transformERC20()` with signed calldata and no relayer fee', async () => {
-        const swap = await generateSwapAsync();
-        const callDataHash = hexUtils.hash(getSwapData(swap));
-        const signedSwapData = getSignedSwapData(swap);
-        const _protocolFee = protocolFee.times(GAS_PRICE).times(swap.orders.length + 1); // Pay a little more fee than needed.
-        const mtx = await createMetaTransactionAsync(signedSwapData, _protocolFee, 0);
-        const relayerEthBalanceBefore = await env.web3Wrapper.getBalanceInWeiAsync(relayer);
-        const receipt = await zeroEx
-            .executeMetaTransaction(mtx, mtx.signature)
-            .awaitTransactionSuccessAsync({ from: relayer, value: mtx.value, gasPrice: GAS_PRICE });
-        const relayerEthRefund = relayerEthBalanceBefore
-            .minus(await env.web3Wrapper.getBalanceInWeiAsync(relayer))
-            .minus(GAS_PRICE.times(receipt.gasUsed));
-        // Ensure the relayer got back the unused protocol fees.
-        expect(relayerEthRefund).to.bignumber.eq(protocolFee.times(GAS_PRICE));
-        // Ensure the relayer got paid no mtx fees.
-        expect(await feeToken.balanceOf(relayer).callAsync()).to.bignumber.eq(0);
-        // Ensure the taker got output tokens.
-        expect(await outputToken.balanceOf(taker).callAsync()).to.bignumber.eq(swap.minOutputTokenAmount);
-        // Ensure the maker got input tokens.
-        expect(await inputToken.balanceOf(maker).callAsync()).to.bignumber.eq(swap.inputTokenAmount);
-        // Check events.
-        verifyEventsFromLogs(
-            receipt.logs,
-            [
-                {
-                    taker,
-                    callDataHash,
-                    sender: zeroEx.address,
-                    data: NULL_BYTES,
-                },
-            ],
-            'TransformerMetadata',
-        );
-    });
-
-    it('can call `transformERC20()` with signed calldata and a relayer fee', async () => {
-        const swap = await generateSwapAsync();
-        const callDataHash = hexUtils.hash(getSwapData(swap));
-        const signedSwapData = getSignedSwapData(swap);
-        const _protocolFee = protocolFee.times(GAS_PRICE).times(swap.orders.length + 1); // Pay a little more fee than needed.
-        const mtx = await createMetaTransactionAsync(signedSwapData, _protocolFee);
-        const relayerEthBalanceBefore = await env.web3Wrapper.getBalanceInWeiAsync(relayer);
-        const receipt = await zeroEx
-            .executeMetaTransaction(mtx, mtx.signature)
-            .awaitTransactionSuccessAsync({ from: relayer, value: mtx.value, gasPrice: GAS_PRICE });
-        const relayerEthRefund = relayerEthBalanceBefore
-            .minus(await env.web3Wrapper.getBalanceInWeiAsync(relayer))
-            .minus(GAS_PRICE.times(receipt.gasUsed));
-        // Ensure the relayer got back the unused protocol fees.
-        expect(relayerEthRefund).to.bignumber.eq(protocolFee.times(GAS_PRICE));
-        // Ensure the relayer got paid mtx fees.
-        expect(await feeToken.balanceOf(relayer).callAsync()).to.bignumber.eq(mtx.feeAmount);
-        // Ensure the taker got output tokens.
-        expect(await outputToken.balanceOf(taker).callAsync()).to.bignumber.eq(swap.minOutputTokenAmount);
-        // Ensure the maker got input tokens.
-        expect(await inputToken.balanceOf(maker).callAsync()).to.bignumber.eq(swap.inputTokenAmount);
-        // Check events.
-        verifyEventsFromLogs(
-            receipt.logs,
-            [
-                {
-                    taker,
-                    callDataHash,
-                    sender: zeroEx.address,
-                    data: NULL_BYTES,
-                },
-            ],
-            'TransformerMetadata',
-        );
-    });
-
-    it('can call `transformERC20()` with wrongly signed calldata and a relayer fee', async () => {
-        const swap = await generateSwapAsync();
-        const signedSwapData = getSignedSwapData(swap, hexUtils.random());
-        const _protocolFee = protocolFee.times(GAS_PRICE).times(swap.orders.length + 1); // Pay a little more fee than needed.
-        const mtx = await createMetaTransactionAsync(signedSwapData, _protocolFee);
-        const relayerEthBalanceBefore = await env.web3Wrapper.getBalanceInWeiAsync(relayer);
-        const receipt = await zeroEx
-            .executeMetaTransaction(mtx, mtx.signature)
-            .awaitTransactionSuccessAsync({ from: relayer, value: mtx.value, gasPrice: GAS_PRICE });
-        const relayerEthRefund = relayerEthBalanceBefore
-            .minus(await env.web3Wrapper.getBalanceInWeiAsync(relayer))
-            .minus(GAS_PRICE.times(receipt.gasUsed));
-        // Ensure the relayer got back the unused protocol fees.
-        expect(relayerEthRefund).to.bignumber.eq(protocolFee.times(GAS_PRICE));
-        // Ensure the relayer got paid mtx fees.
-        expect(await feeToken.balanceOf(relayer).callAsync()).to.bignumber.eq(mtx.feeAmount);
-        // Ensure the taker got output tokens.
-        expect(await outputToken.balanceOf(taker).callAsync()).to.bignumber.eq(swap.minOutputTokenAmount);
-        // Ensure the maker got input tokens.
-        expect(await inputToken.balanceOf(maker).callAsync()).to.bignumber.eq(swap.inputTokenAmount);
-        // Check events.
-        verifyEventsFromLogs(
-            receipt.logs,
-            [
-                {
-                    taker,
-                    // Only signed calldata should have a nonzero hash.
-                    callDataHash: NULL_BYTES32,
-                    sender: zeroEx.address,
-                    data: NULL_BYTES,
-                },
-            ],
-            'TransformerMetadata',
-        );
-    });
-
-    it('`transformERC20()` can fill RFQT order if calldata is signed', async () => {
-        const swap = await generateSwapAsync({}, true);
-        const callDataHash = hexUtils.hash(getSwapData(swap));
-        const signedSwapData = getSignedSwapData(swap);
-        const _protocolFee = protocolFee.times(GAS_PRICE).times(swap.orders.length + 1); // Pay a little more fee than needed.
-        const mtx = await createMetaTransactionAsync(signedSwapData, _protocolFee, 0);
-        const relayerEthBalanceBefore = await env.web3Wrapper.getBalanceInWeiAsync(relayer);
-        const receipt = await zeroEx
-            .executeMetaTransaction(mtx, mtx.signature)
-            .awaitTransactionSuccessAsync({ from: relayer, value: mtx.value, gasPrice: GAS_PRICE });
-        const relayerEthRefund = relayerEthBalanceBefore
-            .minus(await env.web3Wrapper.getBalanceInWeiAsync(relayer))
-            .minus(GAS_PRICE.times(receipt.gasUsed));
-        // Ensure the relayer got back the unused protocol fees.
-        expect(relayerEthRefund).to.bignumber.eq(protocolFee.times(GAS_PRICE));
-        // Ensure the relayer got paid no mtx fees.
-        expect(await feeToken.balanceOf(relayer).callAsync()).to.bignumber.eq(0);
-        // Ensure the taker got output tokens.
-        expect(await outputToken.balanceOf(taker).callAsync()).to.bignumber.eq(swap.minOutputTokenAmount);
-        // Ensure the maker got input tokens.
-        expect(await inputToken.balanceOf(maker).callAsync()).to.bignumber.eq(swap.inputTokenAmount);
-        // Check events.
-        verifyEventsFromLogs(
-            receipt.logs,
-            [
-                {
-                    taker,
-                    callDataHash,
-                    sender: zeroEx.address,
-                    data: NULL_BYTES,
-                },
-            ],
-            'TransformerMetadata',
-        );
-    });
-
-    it('`transformERC20()` can fill RFQT order if calldata is not signed but no quote signer configured', async () => {
-        const swap = await generateSwapAsync({}, true);
-        const callData = getSwapData(swap);
-        const callDataHash = hexUtils.hash(callData);
-        const _protocolFee = protocolFee.times(GAS_PRICE).times(swap.orders.length + 1); // Pay a little more fee than needed.
-        const mtx = await createMetaTransactionAsync(callData, _protocolFee, 0);
-        const relayerEthBalanceBefore = await env.web3Wrapper.getBalanceInWeiAsync(relayer);
-        await zeroEx.setQuoteSigner(NULL_ADDRESS).awaitTransactionSuccessAsync({ from: owner });
-        const receipt = await zeroEx
-            .executeMetaTransaction(mtx, mtx.signature)
-            .awaitTransactionSuccessAsync({ from: relayer, value: mtx.value, gasPrice: GAS_PRICE });
-        const relayerEthRefund = relayerEthBalanceBefore
-            .minus(await env.web3Wrapper.getBalanceInWeiAsync(relayer))
-            .minus(GAS_PRICE.times(receipt.gasUsed));
-        // Ensure the relayer got back the unused protocol fees.
-        expect(relayerEthRefund).to.bignumber.eq(protocolFee.times(GAS_PRICE));
-        // Ensure the relayer got paid no mtx fees.
-        expect(await feeToken.balanceOf(relayer).callAsync()).to.bignumber.eq(0);
-        // Ensure the taker got output tokens.
-        expect(await outputToken.balanceOf(taker).callAsync()).to.bignumber.eq(swap.minOutputTokenAmount);
-        // Ensure the maker got input tokens.
-        expect(await inputToken.balanceOf(maker).callAsync()).to.bignumber.eq(swap.inputTokenAmount);
-        // Check events.
-        verifyEventsFromLogs(
-            receipt.logs,
-            [
-                {
-                    taker,
-                    callDataHash,
-                    sender: zeroEx.address,
-                    data: NULL_BYTES,
-                },
-            ],
-            'TransformerMetadata',
-        );
-    });
-
-    it('`transformERC20()` cannot fill RFQT order if calldata is not signed', async () => {
-        const swap = await generateSwapAsync({}, true);
-        const callData = getSwapData(swap);
-        const _protocolFee = protocolFee.times(GAS_PRICE).times(swap.orders.length + 1); // Pay a little more fee than needed.
-        const mtx = await createMetaTransactionAsync(callData, _protocolFee, 0);
-        const tx = zeroEx
-            .executeMetaTransaction(mtx, mtx.signature)
-            .awaitTransactionSuccessAsync({ from: relayer, value: mtx.value, gasPrice: GAS_PRICE });
-        return expect(tx).to.revertWith(new ZeroExRevertErrors.MetaTransactions.MetaTransactionCallFailedError());
-    });
-});

contracts/integrations/test/wrappers.ts

@@ -10,9 +10,12 @@ export * from '../test/generated-wrappers/test_contract_wrapper';
 export * from '../test/generated-wrappers/test_dydx_user';
 export * from '../test/generated-wrappers/test_eth2_dai';
 export * from '../test/generated-wrappers/test_eth2_dai_bridge';
+export * from '../test/generated-wrappers/test_fixin_protocol_fees_integration';
 export * from '../test/generated-wrappers/test_framework';
 export * from '../test/generated-wrappers/test_mainnet_aggregator_fills';
 export * from '../test/generated-wrappers/test_signature_validation_wallet';
+export * from '../test/generated-wrappers/test_staking';
 export * from '../test/generated-wrappers/test_uniswap_bridge';
 export * from '../test/generated-wrappers/test_uniswap_exchange';
 export * from '../test/generated-wrappers/test_uniswap_exchange_factory';
+export * from '../test/generated-wrappers/test_weth_integration';

contracts/integrations/test/zero-ex/protocol_fees_staking_test.ts

@@ -0,0 +1,85 @@
+import { blockchainTests, constants, expect } from '@0x/contracts-test-utils';
+import { BigNumber, hexUtils } from '@0x/utils';
+
+import { artifacts } from '../artifacts';
+import {
+    TestFixinProtocolFeesIntegrationContract,
+    TestStakingContract,
+    TestWethIntegrationContract,
+} from '../wrappers';
+
+blockchainTests.resets('ProtocolFeeIntegration', env => {
+    const FEE_MULTIPLIER = 70e3;
+    let owner: string;
+    let taker: string;
+    let protocolFees: TestFixinProtocolFeesIntegrationContract;
+    let staking: TestStakingContract;
+    let weth: TestWethIntegrationContract;
+    let singleFeeAmount: BigNumber;
+
+    before(async () => {
+        [owner, taker] = await env.getAccountAddressesAsync();
+        weth = await TestWethIntegrationContract.deployFrom0xArtifactAsync(
+            artifacts.TestWethIntegration,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+        );
+        staking = await TestStakingContract.deployFrom0xArtifactAsync(
+            artifacts.TestStaking,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+            constants.NULL_ADDRESS, // exchange address, which we don't know yet
+            weth.address,
+        );
+        protocolFees = await TestFixinProtocolFeesIntegrationContract.deployFrom0xArtifactAsync(
+            artifacts.TestFixinProtocolFeesIntegration,
+            env.provider,
+            { ...env.txDefaults, from: taker },
+            artifacts,
+            weth.address,
+            staking.address,
+            FEE_MULTIPLIER,
+        );
+        await staking.addAuthorizedAddress(owner).awaitTransactionSuccessAsync();
+        await staking.addExchangeAddress(protocolFees.address).awaitTransactionSuccessAsync({ from: owner });
+        await weth.mint(taker, constants.ONE_ETHER).awaitTransactionSuccessAsync();
+        await weth.approve(protocolFees.address, constants.ONE_ETHER).awaitTransactionSuccessAsync({ from: taker });
+
+        singleFeeAmount = await protocolFees.getSingleProtocolFee().callAsync();
+    });
+
+    describe('fee collection integration', () => {
+        const pool0 = constants.NULL_BYTES32;
+        const poolId = hexUtils.random();
+
+        it('should collect fees for pool 0', async () => {
+            await protocolFees.collectProtocolFee(pool0).awaitTransactionSuccessAsync({ value: singleFeeAmount });
+            await protocolFees.transferFeesForPool(pool0).awaitTransactionSuccessAsync();
+
+            // Fees in the pool bytes32(0) don't get attributed to a pool.
+            await expect(
+                (await staking.getStakingPoolStatsThisEpoch(pool0).callAsync()).feesCollected,
+            ).to.bignumber.equal(constants.ZERO_AMOUNT);
+
+            // Expected amount is singleFeeAmount - 1 because we leave 1 wei of WETH behind for future gas savings.
+            return expect(await weth.balanceOf(staking.address).callAsync()).to.bignumber.equal(
+                singleFeeAmount.minus(1),
+            );
+        });
+
+        it('should collect fees for non-zero pool', async () => {
+            const eth100 = constants.ONE_ETHER.multipliedBy(100);
+            await staking.createTestPool(poolId, eth100, eth100).awaitTransactionSuccessAsync();
+
+            await protocolFees.collectProtocolFee(poolId).awaitTransactionSuccessAsync({ value: singleFeeAmount });
+            await protocolFees.transferFeesForPool(poolId).awaitTransactionSuccessAsync();
+
+            // Expected amount is singleFeeAmount - 1 because we leave 1 wei of WETH behind for future gas savings.
+            return expect(
+                (await staking.getStakingPoolStatsThisEpoch(poolId).callAsync()).feesCollected,
+            ).to.bignumber.equal(singleFeeAmount.minus(1));
+        });
+    });
+});

contracts/integrations/tsconfig.json

@@ -11,11 +11,14 @@
         "test/generated-artifacts/TestDydxUser.json",
         "test/generated-artifacts/TestEth2Dai.json",
         "test/generated-artifacts/TestEth2DaiBridge.json",
+        "test/generated-artifacts/TestFixinProtocolFeesIntegration.json",
         "test/generated-artifacts/TestFramework.json",
         "test/generated-artifacts/TestMainnetAggregatorFills.json",
         "test/generated-artifacts/TestSignatureValidationWallet.json",
+        "test/generated-artifacts/TestStaking.json",
         "test/generated-artifacts/TestUniswapBridge.json",
         "test/generated-artifacts/TestUniswapExchange.json",
-        "test/generated-artifacts/TestUniswapExchangeFactory.json"
+        "test/generated-artifacts/TestUniswapExchangeFactory.json",
+        "test/generated-artifacts/TestWethIntegration.json"
     ]
 }

contracts/multisig/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "4.1.25",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "4.1.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "4.1.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "4.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "4.1.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "4.1.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "4.1.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "4.1.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "4.1.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "4.1.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "4.1.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "4.1.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "4.1.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "4.1.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.1.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.1.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.1.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "4.1.8",

contracts/multisig/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.1.25 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v4.1.24 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v4.1.23 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v4.1.22 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v4.1.21 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v4.1.20 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v4.1.19 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v4.1.18 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v4.1.17 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v4.1.16 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v4.1.15 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v4.1.14 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v4.1.13 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.1.12 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.1.11 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.1.10 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.1.9 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.1.8 - _October 21, 2020_
 
     * Dependencies updated

contracts/multisig/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-multisig",
-    "version": "4.1.8",
+    "version": "4.1.25",
     "engines": {
         "node": ">=6.12"
     },
@@ -49,18 +49,18 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/multisig",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^5.2.7",
         "@types/node": "12.12.54",
@@ -78,9 +78,9 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "ethereum-types": "^3.3.3"
+        "ethereum-types": "^3.4.0"
     },
     "publishConfig": {
         "access": "public"

contracts/staking/CHANGELOG.json

@@ -1,4 +1,157 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "2.0.32",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "2.0.31",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "2.0.30",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "2.0.29",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "2.0.28",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "2.0.27",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608105788,
+        "version": "2.0.26",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "2.0.25",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "2.0.24",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "2.0.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "2.0.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "2.0.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "2.0.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "2.0.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "2.0.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "2.0.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "2.0.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "2.0.15",

contracts/staking/CHANGELOG.md

@@ -5,6 +5,74 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.32 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v2.0.31 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v2.0.30 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v2.0.29 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v2.0.28 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v2.0.27 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v2.0.26 - _December 16, 2020_
+
+    * Dependencies updated
+
+## v2.0.25 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v2.0.24 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v2.0.23 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v2.0.22 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v2.0.21 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v2.0.20 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.0.19 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v2.0.18 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v2.0.17 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v2.0.16 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v2.0.15 - _October 21, 2020_
 
     * Dependencies updated

contracts/staking/compiler.json

@@ -2,7 +2,7 @@
     "artifactsDir": "./test/generated-artifacts",
     "contractsDir": "./contracts",
     "useDockerisedSolc": false,
-    "isOfflineMode": true,
+    "isOfflineMode": false,
     "shouldSaveStandardInput": true,
     "compilerSettings": {
         "evmVersion": "istanbul",

contracts/staking/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-staking",
-    "version": "2.0.15",
+    "version": "2.0.32",
     "engines": {
         "node": ">=6.12"
     },
@@ -53,20 +53,20 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
-        "@0x/abi-gen": "^5.4.3",
+        "@0x/abi-gen": "^5.4.19",
-        "@0x/contracts-asset-proxy": "^3.5.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
-        "@0x/contracts-dev-utils": "^1.3.6",
+        "@0x/contracts-dev-utils": "^1.3.23",
-        "@0x/contracts-erc20": "^3.2.2",
+        "@0x/contracts-erc20": "^3.3.3",
-        "@0x/contracts-exchange-libs": "^4.3.8",
+        "@0x/contracts-exchange-libs": "^4.3.24",
-        "@0x/contracts-gen": "2.0.13",
+        "@0x/contracts-gen": "^2.0.30",
-        "@0x/contracts-utils": "^4.5.2",
+        "@0x/contracts-utils": "^4.7.3",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/lodash": "4.14.104",
         "@types/node": "12.12.54",
         "chai": "^4.0.1",
@@ -87,11 +87,11 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contracts-test-utils": "^5.3.5",
+        "@0x/contracts-test-utils": "^5.3.21",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "ethereumjs-util": "^5.1.1"
     },
     "publishConfig": {

contracts/test-utils/CHANGELOG.json

@@ -1,4 +1,148 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "5.3.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "5.3.20",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "5.3.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1609802516,
+        "version": "5.3.18",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "5.3.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "5.3.16",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "5.3.15",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "5.3.14",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "5.3.13",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605763885,
+        "version": "5.3.12",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "5.3.11",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "5.3.10",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "5.3.9",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "5.3.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "5.3.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "5.3.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1603265572,
         "version": "5.3.5",

contracts/test-utils/CHANGELOG.md

@@ -5,6 +5,70 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.3.21 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v5.3.20 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v5.3.19 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v5.3.18 - _January 4, 2021_
+
+    * Dependencies updated
+
+## v5.3.17 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v5.3.16 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v5.3.15 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v5.3.14 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v5.3.13 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v5.3.12 - _November 19, 2020_
+
+    * Dependencies updated
+
+## v5.3.11 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v5.3.10 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v5.3.9 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v5.3.8 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v5.3.7 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v5.3.6 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v5.3.5 - _October 21, 2020_
 
     * Dependencies updated

contracts/test-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "5.3.5",
+    "version": "5.3.21",
     "engines": {
         "node": ">=6.12"
     },
@@ -34,7 +34,7 @@
     },
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/test-utils",
     "devDependencies": {
-        "@0x/sol-compiler": "^4.2.3",
+        "@0x/sol-compiler": "^4.5.2",
         "@0x/tslint-config": "^4.1.3",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
@@ -42,20 +42,20 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/assert": "^3.0.13",
+        "@0x/assert": "^3.0.21",
-        "@0x/base-contract": "^6.2.7",
+        "@0x/base-contract": "^6.2.18",
-        "@0x/contract-addresses": "^4.12.0",
+        "@0x/contract-addresses": "^5.10.0",
-        "@0x/dev-utils": "^3.3.4",
+        "@0x/dev-utils": "^4.2.1",
-        "@0x/json-schemas": "^5.2.3",
+        "@0x/json-schemas": "^5.4.1",
-        "@0x/order-utils": "^10.4.0",
+        "@0x/order-utils": "^10.4.16",
-        "@0x/sol-coverage": "^4.0.14",
+        "@0x/sol-coverage": "^4.0.29",
-        "@0x/sol-profiler": "^4.1.4",
+        "@0x/sol-profiler": "^4.1.19",
-        "@0x/sol-trace": "^3.0.14",
+        "@0x/sol-trace": "^3.0.29",
-        "@0x/subproviders": "^6.1.5",
+        "@0x/subproviders": "^6.4.1",
-        "@0x/types": "^3.2.4",
+        "@0x/types": "^3.3.1",
-        "@0x/typescript-typings": "^5.1.5",
+        "@0x/typescript-typings": "^5.1.6",
-        "@0x/utils": "^5.6.3",
+        "@0x/utils": "^6.2.0",
-        "@0x/web3-wrapper": "^7.2.4",
+        "@0x/web3-wrapper": "^7.4.1",
         "@types/bn.js": "^4.11.0",
         "@types/js-combinatorics": "^0.5.29",
         "@types/lodash": "4.14.104",
@@ -67,7 +67,7 @@
         "chai-bignumber": "^3.0.0",
         "decimal.js": "^10.2.0",
         "dirty-chai": "^2.0.1",
-        "ethereum-types": "^3.3.3",
+        "ethereum-types": "^3.4.0",
         "ethereumjs-util": "^5.1.1",
         "ethers": "~4.0.4",
         "js-combinatorics": "^0.5.3",

contracts/treasury/.npmignore

@@ -0,0 +1,10 @@
+# Blacklist all files
+.*
+*
+# Whitelist lib
+!lib/**/*
+# Whitelist Solidity contracts
+!contracts/src/**/*
+# Blacklist tests in lib
+/lib/test/*
+# Package specific ignore

contracts/treasury/CHANGELOG.json

@@ -0,0 +1,21 @@
+[
+    {
+        "timestamp": 1612950500,
+        "version": "1.0.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "1.0.0",
+        "changes": [
+            {
+                "note": "Create this package",
+                "pr": 120
+            }
+        ],
+        "timestamp": 1611869778
+    }
+]

contracts/treasury/CHANGELOG.md

@@ -0,0 +1,14 @@
+<!--
+changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
+Edit the package's CHANGELOG.json file only.
+-->
+
+CHANGELOG
+
+## v1.0.1 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v1.0.0 - _January 28, 2021_
+
+    * Create this package (#120)

contracts/treasury/DEPLOYS.json

@@ -0,0 +1 @@
+[]

contracts/treasury/README.md

@@ -0,0 +1,65 @@
+## Governance
+
+This package contains contracts for the governance of the 0x ZRX treasury.
+
+## Installation
+
+**Install**
+
+```bash
+npm install @0x/contracts-treasury --save
+```
+
+## Contributing
+
+We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
+
+For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install Dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
+
+```bash
+PKG=@0x/contracts-treasury yarn build
+```
+
+Or continuously rebuild on change:
+
+```bash
+PKG=@0x/contracts-treasury yarn watch
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
+### Lint
+
+```bash
+yarn lint
+```
+
+### Run Tests
+
+```bash
+yarn test
+```

contracts/treasury/compiler.json

@@ -0,0 +1,29 @@
+{
+    "artifactsDir": "./test/generated-artifacts",
+    "contractsDir": "./contracts",
+    "useDockerisedSolc": false,
+    "isOfflineMode": false,
+    "shouldSaveStandardInput": true,
+    "shouldCompileIndependently": true,
+    "compilerSettings": {
+        "evmVersion": "istanbul",
+        "optimizer": {
+            "enabled": true,
+            "runs": 1000000,
+            "details": { "yul": true, "deduplicate": true, "cse": true, "constantOptimizer": true }
+        },
+        "outputSelection": {
+            "*": {
+                "*": [
+                    "abi",
+                    "devdoc",
+                    "evm.bytecode.object",
+                    "evm.bytecode.sourceMap",
+                    "evm.deployedBytecode.object",
+                    "evm.deployedBytecode.sourceMap",
+                    "evm.methodIdentifiers"
+                ]
+            }
+        }
+    }
+}

contracts/treasury/contracts/src/DefaultPoolOperator.sol

@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2021 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.12;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol";
+import "./IStaking.sol";
+
+
+contract DefaultPoolOperator {
+    using LibERC20TokenV06 for IERC20TokenV06;
+
+    // Immutables
+    IStaking public immutable stakingProxy;
+    IERC20TokenV06 public immutable weth;
+    bytes32 public immutable poolId;
+
+    /// @dev Initializes this contract and creates a staking pool.
+    /// @param stakingProxy_ The 0x staking proxy contract.
+    /// @param weth_ The WETH token contract.
+    constructor(
+        IStaking stakingProxy_,
+        IERC20TokenV06 weth_
+    )
+        public
+    {
+        stakingProxy = stakingProxy_;
+        weth = weth_;
+        // operator share = 100%
+        poolId = stakingProxy_.createStakingPool(10 ** 6, false);
+    }
+
+    /// @dev Sends this contract's entire WETH balance to the
+    ///      staking proxy contract. This function exists in case
+    ///      someone joins the default staking pool and starts
+    ///      market making for some reason, thus earning this contract
+    ///      some staking rewards. Note that anyone can call this
+    ///      function at any time.
+    function returnStakingRewards()
+        external
+    {
+        uint256 wethBalance = weth.compatBalanceOf(address(this));
+        weth.compatTransfer(address(stakingProxy), wethBalance);
+    }
+}

contracts/treasury/contracts/src/IStaking.sol

@@ -0,0 +1,127 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2021 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.12;
+pragma experimental ABIEncoderV2;
+
+
+interface IStaking {
+    /// @dev Statuses that stake can exist in.
+    ///      Any stake can be (re)delegated effective at the next epoch
+    ///      Undelegated stake can be withdrawn if it is available in both the current and next epoch
+    enum StakeStatus {
+        UNDELEGATED,
+        DELEGATED
+    }
+
+    /// @dev Encapsulates a balance for the current and next epochs.
+    /// Note that these balances may be stale if the current epoch
+    /// is greater than `currentEpoch`.
+    /// @param currentEpoch The current epoch
+    /// @param currentEpochBalance Balance in the current epoch.
+    /// @param nextEpochBalance Balance in `currentEpoch+1`.
+    struct StoredBalance {
+        uint64 currentEpoch;
+        uint96 currentEpochBalance;
+        uint96 nextEpochBalance;
+    }
+
+    /// @dev Holds the metadata for a staking pool.
+    /// @param operator Operator of the pool.
+    /// @param operatorShare Fraction of the total balance owned by the operator, in ppm.
+    struct Pool {
+        address operator;
+        uint32 operatorShare;
+    }
+
+    /// @dev Create a new staking pool. The sender will be the operator of this pool.
+    /// Note that an operator must be payable.
+    /// @param operatorShare Portion of rewards owned by the operator, in ppm.
+    /// @param addOperatorAsMaker Adds operator to the created pool as a maker for convenience iff true.
+    /// @return poolId The unique pool id generated for this pool.
+    function createStakingPool(uint32 operatorShare, bool addOperatorAsMaker)
+        external
+        returns (bytes32 poolId);
+
+    /// @dev Returns the current staking epoch number.
+    /// @return epoch The current epoch.
+    function currentEpoch()
+        external
+        view
+        returns (uint256 epoch);
+
+    /// @dev Returns the time (in seconds) at which the current staking epoch started.
+    /// @return startTime The start time of the current epoch, in seconds.
+    function currentEpochStartTimeInSeconds()
+        external
+        view
+        returns (uint256 startTime);
+
+    /// @dev Returns the duration of an epoch in seconds. This value can be updated.
+    /// @return duration The duration of an epoch, in seconds.
+    function epochDurationInSeconds()
+        external
+        view
+        returns (uint256 duration);
+
+    /// @dev Returns a staking pool
+    /// @param poolId Unique id of pool.
+    function getStakingPool(bytes32 poolId)
+        external
+        view
+        returns (Pool memory);
+
+    /// @dev Gets global stake for a given status.
+    /// @param stakeStatus UNDELEGATED or DELEGATED
+    /// @return balance Global stake for given status.
+    function getGlobalStakeByStatus(StakeStatus stakeStatus)
+        external
+        view
+        returns (StoredBalance memory balance);
+
+    /// @dev Gets an owner's stake balances by status.
+    /// @param staker Owner of stake.
+    /// @param stakeStatus UNDELEGATED or DELEGATED
+    /// @return balance Owner's stake balances for given status.
+    function getOwnerStakeByStatus(
+        address staker,
+        StakeStatus stakeStatus
+    )
+        external
+        view
+        returns (StoredBalance memory balance);
+
+    /// @dev Returns the total stake delegated to a specific staking pool,
+    ///      across all members.
+    /// @param poolId Unique Id of pool.
+    /// @return balance Total stake delegated to pool.
+    function getTotalStakeDelegatedToPool(bytes32 poolId)
+        external
+        view
+        returns (StoredBalance memory balance);
+
+    /// @dev Returns the stake delegated to a specific staking pool, by a given staker.
+    /// @param staker of stake.
+    /// @param poolId Unique Id of pool.
+    /// @return balance Stake delegated to pool by staker.
+    function getStakeDelegatedToPoolByOwner(address staker, bytes32 poolId)
+        external
+        view
+        returns (StoredBalance memory balance);
+}

contracts/treasury/contracts/src/IZrxTreasury.sol

@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2021 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.12;
+pragma experimental ABIEncoderV2;
+
+import "./DefaultPoolOperator.sol";
+import "./IStaking.sol";
+
+
+interface IZrxTreasury {
+
+    struct TreasuryParameters {
+        uint256 votingPeriod;
+        uint256 proposalThreshold;
+        uint256 quorumThreshold;
+    }
+
+    struct ProposedAction {
+        address target;
+        bytes data;
+        uint256 value;
+    }
+
+    struct Proposal {
+        bytes32 actionsHash;
+        uint256 executionEpoch;
+        uint256 voteEpoch;
+        uint256 votesFor;
+        uint256 votesAgainst;
+        bool executed;
+    }
+
+    event ProposalCreated(
+        address proposer,
+        bytes32[] operatedPoolIds,
+        uint256 proposalId,
+        ProposedAction[] actions,
+        uint256 executionEpoch,
+        string description
+    );
+
+    event VoteCast(
+        address voter,
+        bytes32[] operatedPoolIds,
+        uint256 proposalId,
+        bool support,
+        uint256 votingPower
+    );
+
+    event ProposalExecuted(uint256 proposalId);
+
+    function stakingProxy()
+        external
+        view
+        returns (IStaking);
+
+    function defaultPoolOperator()
+        external
+        view
+        returns (DefaultPoolOperator);
+
+    function defaultPoolId()
+        external
+        view
+        returns (bytes32);
+
+    function votingPeriod()
+        external
+        view
+        returns (uint256);
+
+    function proposalThreshold()
+        external
+        view
+        returns (uint256);
+
+    function quorumThreshold()
+        external
+        view
+        returns (uint256);
+
+    /// @dev Creates a proposal to send ZRX from this treasury on the
+    ///      the given actions. Must have at least `proposalThreshold`
+    ///      of voting power to call this function. See `getVotingPower`
+    ///      for how voting power is computed. If a proposal is successfully
+    ///      created, voting starts at the epoch after next (currentEpoch + 2).
+    ///      If the vote passes, the proposal is executable during the
+    ///      `executionEpoch`. See `hasProposalPassed` for the passing criteria.
+    /// @param actions The proposed ZRX actions. An action specifies a
+    ///        contract call.
+    /// @param executionEpoch The epoch during which the proposal is to
+    ///        be executed if it passes. Must be at least two epochs
+    ///        from the current epoch.
+    /// @param description A text description for the proposal.
+    /// @param operatedPoolIds The pools operated by `msg.sender`. The
+    ///        ZRX currently delegated to those pools will be accounted
+    ///        for in the voting power.
+    /// @return proposalId The ID of the newly created proposal.
+    function propose(
+        ProposedAction[] calldata actions,
+        uint256 executionEpoch,
+        string calldata description,
+        bytes32[] calldata operatedPoolIds
+    )
+        external
+        returns (uint256 proposalId);
+
+    /// @dev Casts a vote for the given proposal. Only callable
+    ///      during the voting period for that proposal. See
+    ///      `getVotingPower` for how voting power is computed.
+    /// @param proposalId The ID of the proposal to vote on.
+    /// @param support Whether to support the proposal or not.
+    /// @param operatedPoolIds The pools operated by `msg.sender`. The
+    ///        ZRX currently delegated to those pools will be accounted
+    ///        for in the voting power.
+    function castVote(
+        uint256 proposalId,
+        bool support,
+        bytes32[] calldata operatedPoolIds
+    )
+        external;
+
+    /// @dev Executes a proposal that has passed and is
+    ///      currently executable.
+    /// @param proposalId The ID of the proposal to execute.
+    /// @param actions Actions associated with the proposal to execute.
+    function execute(uint256 proposalId, ProposedAction[] memory actions)
+        external
+        payable;
+
+    /// @dev Returns the total number of proposals.
+    /// @return count The number of proposals.
+    function proposalCount()
+        external
+        view
+        returns (uint256 count);
+
+    /// @dev Computes the current voting power of the given account.
+    ///      Voting power is equal to:
+    ///      (ZRX delegated to the default pool) +
+    ///      0.5 * (ZRX delegated to other pools) +
+    ///      0.5 * (ZRX delegated to pools operated by account)
+    /// @param account The address of the account.
+    /// @param operatedPoolIds The pools operated by `account`. The
+    ///        ZRX currently delegated to those pools will be accounted
+    ///        for in the voting power.
+    /// @return votingPower The current voting power of the given account.
+    function getVotingPower(address account, bytes32[] calldata operatedPoolIds)
+        external
+        view
+        returns (uint256 votingPower);
+}

contracts/treasury/contracts/src/ZrxTreasury.sol

@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2021 ZeroEx Intl.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+*/
+
+pragma solidity ^0.6.12;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol";
+import "@0x/contracts-utils/contracts/src/v06/LibBytesV06.sol";
+import "@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol";
+import "@0x/contracts-utils/contracts/src/v06/errors/LibRichErrorsV06.sol";
+import "@0x/contracts-zero-ex/contracts/src/features/libs/LibSignature.sol";
+import "./IZrxTreasury.sol";
+
+
+contract ZrxTreasury is
+    IZrxTreasury
+{
+    using LibERC20TokenV06 for IERC20TokenV06;
+    using LibSafeMathV06 for uint256;
+    using LibRichErrorsV06 for bytes;
+    using LibBytesV06 for bytes;
+
+    // Immutables
+    IStaking public immutable override stakingProxy;
+    DefaultPoolOperator public immutable override defaultPoolOperator;
+    bytes32 public immutable override defaultPoolId;
+    uint256 public immutable override votingPeriod;
+    uint256 public immutable override proposalThreshold;
+    uint256 public immutable override quorumThreshold;
+
+    // Storage
+    Proposal[] public proposals;
+    mapping (uint256 => mapping (address => bool)) public hasVoted;
+
+    /// @dev Initializes the ZRX treasury and creates the default
+    ///      staking pool.
+    /// @param stakingProxy_ The 0x staking proxy contract.
+    /// @param weth_ The WETH token contract.
+    /// @param params Immutable treasury parameters.
+    constructor(
+        IStaking stakingProxy_,
+        IERC20TokenV06 weth_,
+        TreasuryParameters memory params
+    )
+        public
+    {
+        require(
+            params.votingPeriod < stakingProxy_.epochDurationInSeconds(),
+            "VOTING_PERIOD_TOO_LONG"
+        );
+        stakingProxy = stakingProxy_;
+        DefaultPoolOperator defaultPoolOperator_ = new DefaultPoolOperator(
+            stakingProxy_,
+            weth_
+        );
+        defaultPoolOperator = defaultPoolOperator_;
+        defaultPoolId = defaultPoolOperator_.poolId();
+        votingPeriod = params.votingPeriod;
+        proposalThreshold = params.proposalThreshold;
+        quorumThreshold = params.quorumThreshold;
+    }
+
+    // solhint-disable
+    /// @dev Allows this contract to receive ether.
+    receive() external payable {}
+    // solhint-enable
+
+    /// @dev Creates a proposal to send ZRX from this treasury on the
+    ///      the given actions. Must have at least `proposalThreshold`
+    ///      of voting power to call this function. See `getVotingPower`
+    ///      for how voting power is computed. If a proposal is successfully
+    ///      created, voting starts at the epoch after next (currentEpoch + 2).
+    ///      If the vote passes, the proposal is executable during the
+    ///      `executionEpoch`. See `hasProposalPassed` for the passing criteria.
+    /// @param actions The proposed ZRX actions. An action specifies a
+    ///        contract call.
+    /// @param executionEpoch The epoch during which the proposal is to
+    ///        be executed if it passes. Must be at least two epochs
+    ///        from the current epoch.
+    /// @param description A text description for the proposal.
+    /// @param operatedPoolIds The pools operated by `msg.sender`. The
+    ///        ZRX currently delegated to those pools will be accounted
+    ///        for in the voting power.
+    /// @return proposalId The ID of the newly created proposal.
+    function propose(
+        ProposedAction[] memory actions,
+        uint256 executionEpoch,
+        string memory description,
+        bytes32[] memory operatedPoolIds
+    )
+        public
+        override
+        returns (uint256 proposalId)
+    {
+        require(
+            getVotingPower(msg.sender, operatedPoolIds) >= proposalThreshold,
+            "propose/INSUFFICIENT_VOTING_POWER"
+        );
+        require(
+            actions.length > 0,
+            "propose/NO_ACTIONS_PROPOSED"
+        );
+        uint256 currentEpoch = stakingProxy.currentEpoch();
+        require(
+            executionEpoch >= currentEpoch + 2,
+            "propose/INVALID_EXECUTION_EPOCH"
+        );
+
+        proposalId = proposalCount();
+        Proposal storage newProposal = proposals.push();
+        newProposal.actionsHash = keccak256(abi.encode(actions));
+        newProposal.executionEpoch = executionEpoch;
+        newProposal.voteEpoch = currentEpoch + 2;
+
+        emit ProposalCreated(
+            msg.sender,
+            operatedPoolIds,
+            proposalId,
+            actions,
+            executionEpoch,
+            description
+        );
+    }
+
+    /// @dev Casts a vote for the given proposal. Only callable
+    ///      during the voting period for that proposal. See
+    ///      `getVotingPower` for how voting power is computed.
+    /// @param proposalId The ID of the proposal to vote on.
+    /// @param support Whether to support the proposal or not.
+    /// @param operatedPoolIds The pools operated by `msg.sender`. The
+    ///        ZRX currently delegated to those pools will be accounted
+    ///        for in the voting power.
+    function castVote(
+        uint256 proposalId,
+        bool support,
+        bytes32[] memory operatedPoolIds
+    )
+        public
+        override
+    {
+        if (proposalId >= proposalCount()) {
+            revert("castVote/INVALID_PROPOSAL_ID");
+        }
+        if (hasVoted[proposalId][msg.sender]) {
+            revert("castVote/ALREADY_VOTED");
+        }
+
+        Proposal memory proposal = proposals[proposalId];
+        if (
+            proposal.voteEpoch != stakingProxy.currentEpoch() ||
+            _hasVoteEnded(proposal.voteEpoch)
+        ) {
+            revert("castVote/VOTING_IS_CLOSED");
+        }
+
+        uint256 votingPower = getVotingPower(msg.sender, operatedPoolIds);
+        if (votingPower == 0) {
+            revert("castVote/NO_VOTING_POWER");
+        }
+
+        if (support) {
+            proposals[proposalId].votesFor = proposals[proposalId].votesFor
+                .safeAdd(votingPower);
+            hasVoted[proposalId][msg.sender] = true;
+        } else {
+            proposals[proposalId].votesAgainst = proposals[proposalId].votesAgainst
+                .safeAdd(votingPower);
+            hasVoted[proposalId][msg.sender] = true;
+        }
+
+        emit VoteCast(
+            msg.sender,
+            operatedPoolIds,
+            proposalId,
+            support,
+            votingPower
+        );
+    }
+
+    /// @dev Executes a proposal that has passed and is
+    ///      currently executable.
+    /// @param proposalId The ID of the proposal to execute.
+    /// @param actions Actions associated with the proposal to execute.
+    function execute(uint256 proposalId, ProposedAction[] memory actions)
+        public
+        payable
+        override
+    {
+        if (proposalId >= proposalCount()) {
+            revert("execute/INVALID_PROPOSAL_ID");
+        }
+        Proposal memory proposal = proposals[proposalId];
+        _assertProposalExecutable(proposal, actions);
+
+        proposals[proposalId].executed = true;
+
+        for (uint256 i = 0; i != actions.length; i++) {
+            ProposedAction memory action = actions[i];
+            (bool didSucceed, ) = action.target.call{value: action.value}(action.data);
+            require(
+                didSucceed,
+                "execute/ACTION_EXECUTION_FAILED"
+            );
+        }
+
+        emit ProposalExecuted(proposalId);
+    }
+
+    /// @dev Returns the total number of proposals.
+    /// @return count The number of proposals.
+    function proposalCount()
+        public
+        override
+        view
+        returns (uint256 count)
+    {
+        return proposals.length;
+    }
+
+    /// @dev Computes the current voting power of the given account.
+    ///      Voting power is equal to:
+    ///      (ZRX delegated to the default pool) +
+    ///      0.5 * (ZRX delegated to other pools) +
+    ///      0.5 * (ZRX delegated to pools operated by account)
+    /// @param account The address of the account.
+    /// @param operatedPoolIds The pools operated by `account`. The
+    ///        ZRX currently delegated to those pools will be accounted
+    ///        for in the voting power.
+    /// @return votingPower The current voting power of the given account.
+    function getVotingPower(address account, bytes32[] memory operatedPoolIds)
+        public
+        override
+        view
+        returns (uint256 votingPower)
+    {
+        uint256 delegatedBalance = stakingProxy.getOwnerStakeByStatus(
+            account,
+            IStaking.StakeStatus.DELEGATED
+        ).currentEpochBalance;
+        uint256 balanceDelegatedToDefaultPool = stakingProxy.getStakeDelegatedToPoolByOwner(
+            account,
+            defaultPoolId
+        ).currentEpochBalance;
+
+        // Voting power for ZRX delegated to the default pool is not diluted,
+        // so we double-count the balance delegated to the default pool before
+        // dividing by 2.
+        votingPower = delegatedBalance
+            .safeAdd(balanceDelegatedToDefaultPool)
+            .safeDiv(2);
+
+        // Add voting power for operated staking pools.
+        for (uint256 i = 0; i != operatedPoolIds.length; i++) {
+            IStaking.Pool memory pool = stakingProxy.getStakingPool(operatedPoolIds[i]);
+            require(
+                pool.operator == account,
+                "getVotingPower/POOL_NOT_OPERATED_BY_ACCOUNT"
+            );
+            uint96 stakeDelegatedToPool = stakingProxy
+                .getTotalStakeDelegatedToPool(operatedPoolIds[i])
+                .currentEpochBalance;
+            uint256 poolVotingPower = uint256(stakeDelegatedToPool).safeDiv(2);
+            votingPower = votingPower.safeAdd(poolVotingPower);
+        }
+
+        return votingPower;
+    }
+
+    /// @dev Checks whether the given proposal is executable.
+    ///      Reverts if not.
+    /// @param proposal The proposal to check.
+    function _assertProposalExecutable(
+        Proposal memory proposal,
+        ProposedAction[] memory actions
+    )
+        private
+        view
+    {
+        require(
+            keccak256(abi.encode(actions)) == proposal.actionsHash,
+            "_assertProposalExecutable/INVALID_ACTIONS"
+        );
+        require(
+            _hasProposalPassed(proposal),
+            "_assertProposalExecutable/PROPOSAL_HAS_NOT_PASSED"
+        );
+        require(
+            !proposal.executed,
+            "_assertProposalExecutable/PROPOSAL_ALREADY_EXECUTED"
+        );
+        require(
+            stakingProxy.currentEpoch() == proposal.executionEpoch,
+            "_assertProposalExecutable/CANNOT_EXECUTE_THIS_EPOCH"
+        );
+    }
+
+    /// @dev Checks whether the given proposal has passed or not.
+    /// @param proposal The proposal to check.
+    /// @return hasPassed Whether the proposal has passed.
+    function _hasProposalPassed(Proposal memory proposal)
+        private
+        view
+        returns (bool hasPassed)
+    {
+        // Proposal is not passed until the vote is over.
+        if (!_hasVoteEnded(proposal.voteEpoch)) {
+            return false;
+        }
+        // Must have >50% support.
+        if (proposal.votesFor <= proposal.votesAgainst) {
+            return false;
+        }
+        // Must reach quorum threshold.
+        if (proposal.votesFor < quorumThreshold) {
+            return false;
+        }
+        return true;
+    }
+
+    /// @dev Checks whether a vote starting at the given
+    ///      epoch has ended or not.
+    /// @param voteEpoch The epoch at which the vote started.
+    /// @return hasEnded Whether the vote has ended.
+    function _hasVoteEnded(uint256 voteEpoch)
+        private
+        view
+        returns (bool hasEnded)
+    {
+        uint256 currentEpoch = stakingProxy.currentEpoch();
+        if (currentEpoch < voteEpoch) {
+            return false;
+        }
+        if (currentEpoch > voteEpoch) {
+            return true;
+        }
+        // voteEpoch == currentEpoch
+        // Vote ends at currentEpochStartTime + votingPeriod
+        uint256 voteEndTime = stakingProxy
+            .currentEpochStartTimeInSeconds()
+            .safeAdd(votingPeriod);
+        return block.timestamp > voteEndTime;
+    }
+}

contracts/treasury/package.json

@@ -0,0 +1,88 @@
+{
+    "name": "@0x/contracts-treasury",
+    "version": "1.0.1",
+    "engines": {
+        "node": ">=6.12"
+    },
+    "description": "Smart contracts for governing the 0x ZRX treasury",
+    "main": "lib/src/index.js",
+    "directories": {
+        "test": "test"
+    },
+    "scripts": {
+        "build": "yarn pre_build && yarn build:ts",
+        "build:ci": "yarn build",
+        "build:ts": "tsc -b",
+        "pre_build": "run-s compile contracts:gen generate_contract_wrappers contracts:copy",
+        "test": "yarn run_mocha",
+        "rebuild_and_test": "run-s build test",
+        "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
+        "compile": "sol-compiler",
+        "watch": "sol-compiler -w",
+        "clean": "shx rm -rf lib test/generated-artifacts test/generated-wrappers generated-artifacts generated-wrappers",
+        "generate_contract_wrappers": "abi-gen --debug --abis  ${npm_package_config_abis} --output test/generated-wrappers --backend ethers",
+        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./test/generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude ./test/generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
+        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude ./test/generated-wrappers/**/* --exclude ./test/generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
+        "test:circleci": "yarn test",
+        "contracts:gen": "contracts-gen generate",
+        "contracts:copy": "contracts-gen copy",
+        "lint-contracts": "#solhint -c ../.solhint.json contracts/**/**/**/**/*.sol",
+        "docs:md": "ts-doc-gen --sourceDir='$PROJECT_FILES' --output=$MD_FILE_DIR --fileExtension=mdx --tsconfig=./typedoc-tsconfig.json",
+        "docs:json": "typedoc --excludePrivate --excludeExternals --excludeProtected --ignoreCompilerErrors --target ES5 --tsconfig typedoc-tsconfig.json --json $JSON_FILE_PATH $PROJECT_FILES",
+        "publish:private": "yarn build && gitpkg publish"
+    },
+    "config": {
+        "publicInterfaceContracts": "ZrxTreasury,DefaultPoolOperator",
+        "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
+        "abis": "./test/generated-artifacts/@(DefaultPoolOperator|IStaking|IZrxTreasury|ZrxTreasury).json"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/0xProject/protocol.git"
+    },
+    "license": "Apache-2.0",
+    "bugs": {
+        "url": "https://github.com/0xProject/protocol/issues"
+    },
+    "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/treasury",
+    "devDependencies": {
+        "@0x/abi-gen": "^5.4.13",
+        "@0x/contract-addresses": "^5.10.0",
+        "@0x/contracts-asset-proxy": "^3.7.6",
+        "@0x/contracts-erc20": "^3.3.3",
+        "@0x/contracts-gen": "^2.0.24",
+        "@0x/contracts-staking": "^2.0.32",
+        "@0x/contracts-test-utils": "^5.3.21",
+        "@0x/sol-compiler": "^4.4.1",
+        "@0x/ts-doc-gen": "^0.0.28",
+        "@0x/tslint-config": "^4.1.3",
+        "@types/isomorphic-fetch": "^0.0.35",
+        "@types/lodash": "4.14.104",
+        "@types/mocha": "^5.2.7",
+        "@types/prompts": "^2.0.9",
+        "isomorphic-fetch": "^3.0.0",
+        "lodash": "^4.17.11",
+        "mocha": "^6.2.0",
+        "npm-run-all": "^4.1.2",
+        "prompts": "^2.4.0",
+        "shx": "^0.2.2",
+        "solhint": "^1.4.1",
+        "tslint": "5.11.0",
+        "typedoc": "~0.16.11",
+        "typescript": "3.0.1"
+    },
+    "dependencies": {
+        "@0x/base-contract": "^6.2.14",
+        "@0x/protocol-utils": "^1.2.0",
+        "@0x/subproviders": "^6.2.3",
+        "@0x/types": "^3.3.1",
+        "@0x/typescript-typings": "^5.1.6",
+        "@0x/utils": "^6.1.1",
+        "@0x/web3-wrapper": "^7.3.0",
+        "ethereum-types": "^3.4.0",
+        "ethereumjs-util": "^5.1.1"
+    },
+    "publishConfig": {
+        "access": "public"
+    }
+}

contracts/treasury/src/artifacts.ts

@@ -0,0 +1,13 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DefaultPoolOperator from '../generated-artifacts/DefaultPoolOperator.json';
+import * as ZrxTreasury from '../generated-artifacts/ZrxTreasury.json';
+export const artifacts = {
+    ZrxTreasury: ZrxTreasury as ContractArtifact,
+    DefaultPoolOperator: DefaultPoolOperator as ContractArtifact,
+};

contracts/treasury/src/index.ts

@@ -0,0 +1,2 @@
+export { artifacts } from './artifacts';
+export { DefaultPoolOperatorContract, ZrxTreasuryContract } from './wrappers';

contracts/treasury/src/wrappers.ts

@@ -0,0 +1,7 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../generated-wrappers/default_pool_operator';
+export * from '../generated-wrappers/zrx_treasury';

contracts/treasury/test/artifacts.ts

@@ -0,0 +1,17 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+import { ContractArtifact } from 'ethereum-types';
+
+import * as DefaultPoolOperator from '../test/generated-artifacts/DefaultPoolOperator.json';
+import * as IStaking from '../test/generated-artifacts/IStaking.json';
+import * as IZrxTreasury from '../test/generated-artifacts/IZrxTreasury.json';
+import * as ZrxTreasury from '../test/generated-artifacts/ZrxTreasury.json';
+export const artifacts = {
+    DefaultPoolOperator: DefaultPoolOperator as ContractArtifact,
+    IStaking: IStaking as ContractArtifact,
+    IZrxTreasury: IZrxTreasury as ContractArtifact,
+    ZrxTreasury: ZrxTreasury as ContractArtifact,
+};

contracts/treasury/test/treasury_test.ts

@@ -0,0 +1,583 @@
+import { artifacts as assetProxyArtifacts, ERC20ProxyContract } from '@0x/contracts-asset-proxy';
+import { artifacts as erc20Artifacts, DummyERC20TokenContract } from '@0x/contracts-erc20';
+import {
+    artifacts as stakingArtifacts,
+    constants as stakingConstants,
+    StakeInfo,
+    StakeStatus,
+    StakingProxyContract,
+    TestStakingContract,
+    ZrxVaultContract,
+} from '@0x/contracts-staking';
+import {
+    blockchainTests,
+    constants,
+    expect,
+    getRandomInteger,
+    randomAddress,
+    verifyEventsFromLogs,
+} from '@0x/contracts-test-utils';
+import { BigNumber } from '@0x/utils';
+import * as _ from 'lodash';
+
+import { artifacts } from './artifacts';
+import { DefaultPoolOperatorContract, ZrxTreasuryContract, ZrxTreasuryEvents } from './wrappers';
+
+blockchainTests.resets('Treasury governance', env => {
+    const TREASURY_PARAMS = {
+        votingPeriod: new BigNumber(3).times(stakingConstants.ONE_DAY_IN_SECONDS),
+        proposalThreshold: new BigNumber(100),
+        quorumThreshold: new BigNumber(1000),
+    };
+    const PROPOSAL_DESCRIPTION = 'A very compelling proposal!';
+    const TREASURY_BALANCE = constants.INITIAL_ERC20_BALANCE;
+    const INVALID_PROPOSAL_ID = new BigNumber(999);
+    const GRANT_PROPOSALS = [
+        { recipient: randomAddress(), amount: getRandomInteger(1, TREASURY_BALANCE.dividedToIntegerBy(2)) },
+        { recipient: randomAddress(), amount: getRandomInteger(1, TREASURY_BALANCE.dividedToIntegerBy(2)) },
+    ];
+
+    interface ProposedAction {
+        target: string;
+        data: string;
+        value: BigNumber;
+    }
+
+    let zrx: DummyERC20TokenContract;
+    let weth: DummyERC20TokenContract;
+    let erc20ProxyContract: ERC20ProxyContract;
+    let staking: TestStakingContract;
+    let treasury: ZrxTreasuryContract;
+    let defaultPoolId: string;
+    let defaultPoolOperator: DefaultPoolOperatorContract;
+    let admin: string;
+    let nonDefaultPoolId: string;
+    let poolOperator: string;
+    let delegator: string;
+    let actions: ProposedAction[];
+
+    async function deployStakingAsync(): Promise<void> {
+        erc20ProxyContract = await ERC20ProxyContract.deployFrom0xArtifactAsync(
+            assetProxyArtifacts.ERC20Proxy,
+            env.provider,
+            env.txDefaults,
+            assetProxyArtifacts,
+        );
+        const zrxVaultContract = await ZrxVaultContract.deployFrom0xArtifactAsync(
+            stakingArtifacts.ZrxVault,
+            env.provider,
+            env.txDefaults,
+            stakingArtifacts,
+            erc20ProxyContract.address,
+            zrx.address,
+        );
+        await erc20ProxyContract.addAuthorizedAddress(zrxVaultContract.address).awaitTransactionSuccessAsync();
+        await zrxVaultContract.addAuthorizedAddress(admin).awaitTransactionSuccessAsync();
+        const stakingLogic = await TestStakingContract.deployFrom0xArtifactAsync(
+            stakingArtifacts.TestStaking,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+            weth.address,
+            zrxVaultContract.address,
+        );
+        const stakingProxyContract = await StakingProxyContract.deployFrom0xArtifactAsync(
+            stakingArtifacts.StakingProxy,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+            stakingLogic.address,
+        );
+        await stakingProxyContract.addAuthorizedAddress(admin).awaitTransactionSuccessAsync();
+        await zrxVaultContract.setStakingProxy(stakingProxyContract.address).awaitTransactionSuccessAsync();
+        staking = new TestStakingContract(stakingProxyContract.address, env.provider, env.txDefaults);
+    }
+
+    async function fastForwardToNextEpochAsync(): Promise<void> {
+        const epochEndTime = await staking.getCurrentEpochEarliestEndTimeInSeconds().callAsync();
+        const lastBlockTime = await env.web3Wrapper.getBlockTimestampAsync('latest');
+        const dt = Math.max(0, epochEndTime.minus(lastBlockTime).toNumber());
+        await env.web3Wrapper.increaseTimeAsync(dt);
+        // mine next block
+        await env.web3Wrapper.mineBlockAsync();
+        await staking.endEpoch().awaitTransactionSuccessAsync();
+    }
+
+    before(async () => {
+        [admin, poolOperator, delegator] = await env.getAccountAddressesAsync();
+        zrx = await DummyERC20TokenContract.deployFrom0xArtifactAsync(
+            erc20Artifacts.DummyERC20Token,
+            env.provider,
+            env.txDefaults,
+            erc20Artifacts,
+            constants.DUMMY_TOKEN_NAME,
+            constants.DUMMY_TOKEN_SYMBOL,
+            constants.DUMMY_TOKEN_DECIMALS,
+            constants.DUMMY_TOKEN_TOTAL_SUPPLY,
+        );
+        weth = await DummyERC20TokenContract.deployFrom0xArtifactAsync(
+            erc20Artifacts.DummyERC20Token,
+            env.provider,
+            env.txDefaults,
+            erc20Artifacts,
+            constants.DUMMY_TOKEN_NAME,
+            constants.DUMMY_TOKEN_SYMBOL,
+            constants.DUMMY_TOKEN_DECIMALS,
+            constants.DUMMY_TOKEN_TOTAL_SUPPLY,
+        );
+        await deployStakingAsync();
+        await zrx.mint(constants.INITIAL_ERC20_BALANCE).awaitTransactionSuccessAsync({ from: poolOperator });
+        await zrx.mint(constants.INITIAL_ERC20_BALANCE).awaitTransactionSuccessAsync({ from: delegator });
+        await zrx
+            .approve(erc20ProxyContract.address, constants.INITIAL_ERC20_ALLOWANCE)
+            .awaitTransactionSuccessAsync({ from: poolOperator });
+        await zrx
+            .approve(erc20ProxyContract.address, constants.INITIAL_ERC20_ALLOWANCE)
+            .awaitTransactionSuccessAsync({ from: delegator });
+
+        const createStakingPoolTx = staking.createStakingPool(stakingConstants.PPM, false);
+        nonDefaultPoolId = await createStakingPoolTx.callAsync({ from: poolOperator });
+        await createStakingPoolTx.awaitTransactionSuccessAsync({ from: poolOperator });
+
+        treasury = await ZrxTreasuryContract.deployFrom0xArtifactAsync(
+            artifacts.ZrxTreasury,
+            env.provider,
+            env.txDefaults,
+            { ...artifacts, ...erc20Artifacts },
+            staking.address,
+            weth.address,
+            TREASURY_PARAMS,
+        );
+        await zrx.mint(TREASURY_BALANCE).awaitTransactionSuccessAsync();
+        await zrx.transfer(treasury.address, TREASURY_BALANCE).awaitTransactionSuccessAsync();
+        actions = [
+            {
+                target: zrx.address,
+                data: zrx
+                    .transfer(GRANT_PROPOSALS[0].recipient, GRANT_PROPOSALS[0].amount)
+                    .getABIEncodedTransactionData(),
+                value: constants.ZERO_AMOUNT,
+            },
+            {
+                target: zrx.address,
+                data: zrx
+                    .transfer(GRANT_PROPOSALS[1].recipient, GRANT_PROPOSALS[1].amount)
+                    .getABIEncodedTransactionData(),
+                value: constants.ZERO_AMOUNT,
+            },
+        ];
+
+        defaultPoolId = await treasury.defaultPoolId().callAsync();
+        const defaultPoolOperatorAddress = await treasury.defaultPoolOperator().callAsync();
+        defaultPoolOperator = new DefaultPoolOperatorContract(defaultPoolOperatorAddress, env.provider, env.txDefaults);
+    });
+    describe('getVotingPower()', () => {
+        it('Unstaked ZRX has no voting power', async () => {
+            const votingPower = await treasury.getVotingPower(delegator, []).callAsync();
+            expect(votingPower).to.bignumber.equal(0);
+        });
+        it('Staked but undelegated ZRX has no voting power', async () => {
+            await staking.stake(constants.INITIAL_ERC20_BALANCE).awaitTransactionSuccessAsync({ from: delegator });
+            const votingPower = await treasury.getVotingPower(delegator, []).callAsync();
+            expect(votingPower).to.bignumber.equal(0);
+        });
+        it('ZRX delegated during epoch N has no voting power during Epoch N', async () => {
+            await staking.stake(TREASURY_PARAMS.proposalThreshold).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    TREASURY_PARAMS.proposalThreshold,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            const votingPower = await treasury.getVotingPower(delegator, []).callAsync();
+            expect(votingPower).to.bignumber.equal(0);
+            await fastForwardToNextEpochAsync();
+        });
+        it('ZRX delegated to the default pool retains full voting power', async () => {
+            await staking.stake(TREASURY_PARAMS.proposalThreshold).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    TREASURY_PARAMS.proposalThreshold,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const votingPower = await treasury.getVotingPower(delegator, []).callAsync();
+            expect(votingPower).to.bignumber.equal(TREASURY_PARAMS.proposalThreshold);
+        });
+        it('ZRX delegated to a non-default pool splits voting power between delegator and pool operator', async () => {
+            await staking.stake(TREASURY_PARAMS.proposalThreshold).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, nonDefaultPoolId),
+                    TREASURY_PARAMS.proposalThreshold,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const delegatorVotingPower = await treasury.getVotingPower(delegator, []).callAsync();
+            expect(delegatorVotingPower).to.bignumber.equal(TREASURY_PARAMS.proposalThreshold.dividedBy(2));
+            const operatorVotingPower = await treasury.getVotingPower(poolOperator, [nonDefaultPoolId]).callAsync();
+            expect(operatorVotingPower).to.bignumber.equal(TREASURY_PARAMS.proposalThreshold.dividedBy(2));
+        });
+        it('Correctly sums voting power delegated to multiple pools', async () => {
+            await staking
+                .stake(TREASURY_PARAMS.proposalThreshold.times(2))
+                .awaitTransactionSuccessAsync({ from: delegator });
+            // Delegate half of total stake to the default pool.
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    TREASURY_PARAMS.proposalThreshold,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            // Delegate the other half to a non-default pool.
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, nonDefaultPoolId),
+                    TREASURY_PARAMS.proposalThreshold,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const delegatorVotingPower = await treasury.getVotingPower(delegator, []).callAsync();
+            expect(delegatorVotingPower).to.bignumber.equal(TREASURY_PARAMS.proposalThreshold.times(1.5));
+        });
+        it('Correctly sums voting power for operator with multiple pools', async () => {
+            const createStakingPoolTx = staking.createStakingPool(stakingConstants.PPM, false);
+            const firstPool = nonDefaultPoolId;
+            const secondPool = await createStakingPoolTx.callAsync({ from: poolOperator });
+            await createStakingPoolTx.awaitTransactionSuccessAsync({ from: poolOperator });
+
+            const amountDelegatedToDefaultPool = new BigNumber(1337);
+            const amountSelfDelegatedToFirstPool = new BigNumber(420);
+            const amountExternallyDelegatedToSecondPool = new BigNumber(2020);
+
+            await staking
+                .stake(amountDelegatedToDefaultPool.plus(amountSelfDelegatedToFirstPool))
+                .awaitTransactionSuccessAsync({ from: poolOperator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    amountDelegatedToDefaultPool,
+                )
+                .awaitTransactionSuccessAsync({ from: poolOperator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, firstPool),
+                    amountSelfDelegatedToFirstPool,
+                )
+                .awaitTransactionSuccessAsync({ from: poolOperator });
+            await staking
+                .stake(amountExternallyDelegatedToSecondPool)
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, secondPool),
+                    amountExternallyDelegatedToSecondPool,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+
+            await fastForwardToNextEpochAsync();
+            const votingPower = await treasury.getVotingPower(poolOperator, [firstPool, secondPool]).callAsync();
+            expect(votingPower).to.bignumber.equal(
+                amountDelegatedToDefaultPool
+                    .plus(amountSelfDelegatedToFirstPool)
+                    .plus(amountExternallyDelegatedToSecondPool.dividedToIntegerBy(2)),
+            );
+        });
+    });
+    describe('propose()', () => {
+        it('Cannot create proposal without sufficient voting power', async () => {
+            const votingPower = TREASURY_PARAMS.proposalThreshold.minus(1);
+            await staking.stake(votingPower).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    votingPower,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const currentEpoch = await staking.currentEpoch().callAsync();
+            const tx = treasury
+                .propose(actions, currentEpoch.plus(2), PROPOSAL_DESCRIPTION, [])
+                .awaitTransactionSuccessAsync({ from: delegator });
+            return expect(tx).to.revertWith('propose/INSUFFICIENT_VOTING_POWER');
+        });
+        it('Cannot create proposal with no actions', async () => {
+            const votingPower = TREASURY_PARAMS.proposalThreshold;
+            await staking.stake(votingPower).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    votingPower,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const currentEpoch = await staking.currentEpoch().callAsync();
+            const tx = treasury
+                .propose([], currentEpoch.plus(2), PROPOSAL_DESCRIPTION, [])
+                .awaitTransactionSuccessAsync({ from: delegator });
+            return expect(tx).to.revertWith('propose/NO_ACTIONS_PROPOSED');
+        });
+        it('Cannot create proposal with an invalid execution epoch', async () => {
+            const votingPower = TREASURY_PARAMS.proposalThreshold;
+            await staking.stake(votingPower).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    votingPower,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const currentEpoch = await staking.currentEpoch().callAsync();
+            const tx = treasury
+                .propose(actions, currentEpoch.plus(1), PROPOSAL_DESCRIPTION, [])
+                .awaitTransactionSuccessAsync({ from: delegator });
+            return expect(tx).to.revertWith('propose/INVALID_EXECUTION_EPOCH');
+        });
+        it('Can create a valid proposal', async () => {
+            const votingPower = TREASURY_PARAMS.proposalThreshold;
+            await staking.stake(votingPower).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    votingPower,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const currentEpoch = await staking.currentEpoch().callAsync();
+            const executionEpoch = currentEpoch.plus(2);
+            const tx = await treasury
+                .propose(actions, executionEpoch, PROPOSAL_DESCRIPTION, [])
+                .awaitTransactionSuccessAsync({ from: delegator });
+            const proposalId = new BigNumber(0);
+            verifyEventsFromLogs(
+                tx.logs,
+                [
+                    {
+                        proposer: delegator,
+                        operatedPoolIds: [],
+                        proposalId,
+                        actions,
+                        executionEpoch,
+                        description: PROPOSAL_DESCRIPTION,
+                    },
+                ],
+                ZrxTreasuryEvents.ProposalCreated,
+            );
+            expect(await treasury.proposalCount().callAsync()).to.bignumber.equal(1);
+        });
+    });
+    describe('castVote()', () => {
+        const VOTE_PROPOSAL_ID = new BigNumber(0);
+        const DELEGATOR_VOTING_POWER = new BigNumber(420);
+
+        before(async () => {
+            await staking.stake(DELEGATOR_VOTING_POWER).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    DELEGATOR_VOTING_POWER,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const currentEpoch = await staking.currentEpoch().callAsync();
+            await treasury
+                .propose(actions, currentEpoch.plus(2), PROPOSAL_DESCRIPTION, [])
+                .awaitTransactionSuccessAsync({ from: delegator });
+        });
+        it('Cannot vote on invalid proposalId', async () => {
+            await fastForwardToNextEpochAsync();
+            await fastForwardToNextEpochAsync();
+            const tx = treasury
+                .castVote(INVALID_PROPOSAL_ID, true, [])
+                .awaitTransactionSuccessAsync({ from: delegator });
+            return expect(tx).to.revertWith('castVote/INVALID_PROPOSAL_ID');
+        });
+        it('Cannot vote before voting period starts', async () => {
+            const tx = treasury.castVote(VOTE_PROPOSAL_ID, true, []).awaitTransactionSuccessAsync({ from: delegator });
+            return expect(tx).to.revertWith('castVote/VOTING_IS_CLOSED');
+        });
+        it('Cannot vote after voting period ends', async () => {
+            await fastForwardToNextEpochAsync();
+            await fastForwardToNextEpochAsync();
+            await env.web3Wrapper.increaseTimeAsync(TREASURY_PARAMS.votingPeriod.plus(1).toNumber());
+            await env.web3Wrapper.mineBlockAsync();
+            const tx = treasury.castVote(VOTE_PROPOSAL_ID, true, []).awaitTransactionSuccessAsync({ from: delegator });
+            return expect(tx).to.revertWith('castVote/VOTING_IS_CLOSED');
+        });
+        it('Cannot vote twice on same proposal', async () => {
+            await fastForwardToNextEpochAsync();
+            await fastForwardToNextEpochAsync();
+            await treasury.castVote(VOTE_PROPOSAL_ID, true, []).awaitTransactionSuccessAsync({ from: delegator });
+            const tx = treasury.castVote(VOTE_PROPOSAL_ID, false, []).awaitTransactionSuccessAsync({ from: delegator });
+            return expect(tx).to.revertWith('castVote/ALREADY_VOTED');
+        });
+        it('Can cast a valid vote', async () => {
+            await fastForwardToNextEpochAsync();
+            await fastForwardToNextEpochAsync();
+            const tx = await treasury
+                .castVote(VOTE_PROPOSAL_ID, true, [])
+                .awaitTransactionSuccessAsync({ from: delegator });
+            verifyEventsFromLogs(
+                tx.logs,
+                [
+                    {
+                        voter: delegator,
+                        operatedPoolIds: [],
+                        proposalId: VOTE_PROPOSAL_ID,
+                        support: true,
+                        votingPower: DELEGATOR_VOTING_POWER,
+                    },
+                ],
+                ZrxTreasuryEvents.VoteCast,
+            );
+        });
+    });
+    describe('execute()', () => {
+        let passedProposalId: BigNumber;
+        let failedProposalId: BigNumber;
+        let defeatedProposalId: BigNumber;
+        let ongoingVoteProposalId: BigNumber;
+
+        before(async () => {
+            // OPerator has enough ZRX to create and pass a proposal
+            await staking.stake(TREASURY_PARAMS.quorumThreshold).awaitTransactionSuccessAsync({ from: poolOperator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    TREASURY_PARAMS.quorumThreshold,
+                )
+                .awaitTransactionSuccessAsync({ from: poolOperator });
+            // Delegator only has enough ZRX to create a proposal
+            await staking.stake(TREASURY_PARAMS.proposalThreshold).awaitTransactionSuccessAsync({ from: delegator });
+            await staking
+                .moveStake(
+                    new StakeInfo(StakeStatus.Undelegated),
+                    new StakeInfo(StakeStatus.Delegated, defaultPoolId),
+                    TREASURY_PARAMS.proposalThreshold,
+                )
+                .awaitTransactionSuccessAsync({ from: delegator });
+            await fastForwardToNextEpochAsync();
+            const currentEpoch = await staking.currentEpoch().callAsync();
+            // Proposal 0
+            let tx = treasury.propose(actions, currentEpoch.plus(4), PROPOSAL_DESCRIPTION, []);
+            passedProposalId = await tx.callAsync({ from: delegator });
+            await tx.awaitTransactionSuccessAsync({ from: delegator });
+            // Proposal 1
+            tx = treasury.propose(actions, currentEpoch.plus(3), PROPOSAL_DESCRIPTION, []);
+            failedProposalId = await tx.callAsync({ from: delegator });
+            await tx.awaitTransactionSuccessAsync({ from: delegator });
+            // Proposal 2
+            tx = treasury.propose(actions, currentEpoch.plus(3), PROPOSAL_DESCRIPTION, []);
+            defeatedProposalId = await tx.callAsync({ from: delegator });
+            await tx.awaitTransactionSuccessAsync({ from: delegator });
+
+            await fastForwardToNextEpochAsync();
+            // Proposal 3
+            tx = treasury.propose(actions, currentEpoch.plus(3), PROPOSAL_DESCRIPTION, []);
+            ongoingVoteProposalId = await tx.callAsync({ from: delegator });
+            await tx.awaitTransactionSuccessAsync({ from: delegator });
+
+            await fastForwardToNextEpochAsync();
+            /********** Start Vote Epoch for Proposals 0, 1, 2 **********/
+            // Proposal 0 passes
+            await treasury.castVote(passedProposalId, true, []).awaitTransactionSuccessAsync({ from: poolOperator });
+            // Proposal 1 fails to reach quorum
+            await treasury.castVote(failedProposalId, true, []).awaitTransactionSuccessAsync({ from: delegator });
+            // Proposal 2 is voted down
+            await treasury.castVote(defeatedProposalId, true, []).awaitTransactionSuccessAsync({ from: delegator });
+            await treasury.castVote(defeatedProposalId, false, []).awaitTransactionSuccessAsync({ from: poolOperator });
+            /********** End Vote Epoch for Proposals 0, 1, 2 **********/
+
+            await fastForwardToNextEpochAsync();
+            /********** Start Execution Epoch for Proposals 1, 2, 3 **********/
+            /********** Start Vote Epoch for Proposal 3 **********************/
+            // Proposal 3 has enough votes to pass, but the vote is ongoing
+            await treasury
+                .castVote(ongoingVoteProposalId, true, [])
+                .awaitTransactionSuccessAsync({ from: poolOperator });
+        });
+        it('Cannot execute an invalid proposalId', async () => {
+            const tx = treasury.execute(INVALID_PROPOSAL_ID, actions).awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith('execute/INVALID_PROPOSAL_ID');
+        });
+        it('Cannot execute a proposal whose vote is ongoing', async () => {
+            const tx = treasury.execute(ongoingVoteProposalId, actions).awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith('_assertProposalExecutable/PROPOSAL_HAS_NOT_PASSED');
+        });
+        it('Cannot execute a proposal that failed to reach quorum', async () => {
+            const tx = treasury.execute(failedProposalId, actions).awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith('_assertProposalExecutable/PROPOSAL_HAS_NOT_PASSED');
+        });
+        it('Cannot execute a proposal that was defeated in its vote', async () => {
+            const tx = treasury.execute(defeatedProposalId, actions).awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith('_assertProposalExecutable/PROPOSAL_HAS_NOT_PASSED');
+        });
+        it('Cannot execute before or after the execution epoch', async () => {
+            const tooEarly = treasury.execute(passedProposalId, actions).awaitTransactionSuccessAsync();
+            expect(tooEarly).to.revertWith('_assertProposalExecutable/CANNOT_EXECUTE_THIS_EPOCH');
+            await fastForwardToNextEpochAsync();
+            // Proposal 0 is executable here
+            await fastForwardToNextEpochAsync();
+            const tooLate = treasury.execute(passedProposalId, actions).awaitTransactionSuccessAsync();
+            return expect(tooLate).to.revertWith('_assertProposalExecutable/CANNOT_EXECUTE_THIS_EPOCH');
+        });
+        it('Cannot execute the same proposal twice', async () => {
+            await fastForwardToNextEpochAsync();
+            await treasury.execute(passedProposalId, actions).awaitTransactionSuccessAsync();
+            const tx = treasury.execute(passedProposalId, actions).awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith('_assertProposalExecutable/PROPOSAL_ALREADY_EXECUTED');
+        });
+        it('Cannot execute actions that do not match the proposal `actionsHash`', async () => {
+            await fastForwardToNextEpochAsync();
+            const tx = treasury
+                .execute(passedProposalId, [
+                    {
+                        target: zrx.address,
+                        data: zrx.transfer(randomAddress(), GRANT_PROPOSALS[0].amount).getABIEncodedTransactionData(),
+                        value: constants.ZERO_AMOUNT,
+                    },
+                ])
+                .awaitTransactionSuccessAsync();
+            return expect(tx).to.revertWith('_assertProposalExecutable/INVALID_ACTIONS');
+        });
+        it('Can execute a valid proposal', async () => {
+            await fastForwardToNextEpochAsync();
+            const tx = await treasury.execute(passedProposalId, actions).awaitTransactionSuccessAsync();
+            verifyEventsFromLogs(tx.logs, [{ proposalId: passedProposalId }], ZrxTreasuryEvents.ProposalExecuted);
+            expect(await zrx.balanceOf(GRANT_PROPOSALS[0].recipient).callAsync()).to.bignumber.equal(
+                GRANT_PROPOSALS[0].amount,
+            );
+            expect(await zrx.balanceOf(GRANT_PROPOSALS[1].recipient).callAsync()).to.bignumber.equal(
+                GRANT_PROPOSALS[1].amount,
+            );
+        });
+    });
+    describe('Default pool operator contract', () => {
+        it('Returns WETH to the staking proxy', async () => {
+            const wethAmount = new BigNumber(1337);
+            await weth.mint(wethAmount).awaitTransactionSuccessAsync();
+            // Some amount of WETH ends up in the default pool operator
+            // contract, e.g. from errant staking rewards.
+            await weth.transfer(defaultPoolOperator.address, wethAmount).awaitTransactionSuccessAsync();
+            // This function should send all the WETH to the staking proxy.
+            await defaultPoolOperator.returnStakingRewards().awaitTransactionSuccessAsync();
+            expect(await weth.balanceOf(defaultPoolOperator.address).callAsync()).to.bignumber.equal(0);
+            expect(await weth.balanceOf(staking.address).callAsync()).to.bignumber.equal(wethAmount);
+        });
+    });
+});

contracts/treasury/test/wrappers.ts

@@ -0,0 +1,9 @@
+/*
+ * -----------------------------------------------------------------------------
+ * Warning: This file is auto-generated by contracts-gen. Don't edit manually.
+ * -----------------------------------------------------------------------------
+ */
+export * from '../test/generated-wrappers/default_pool_operator';
+export * from '../test/generated-wrappers/i_staking';
+export * from '../test/generated-wrappers/i_zrx_treasury';
+export * from '../test/generated-wrappers/zrx_treasury';

contracts/treasury/tsconfig.json

@@ -0,0 +1,14 @@
+{
+    "extends": "../../tsconfig",
+    "compilerOptions": { "outDir": "lib", "rootDir": ".", "resolveJsonModule": true },
+    "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
+    "files": [
+        "generated-artifacts/DefaultPoolOperator.json",
+        "generated-artifacts/ZrxTreasury.json",
+        "test/generated-artifacts/DefaultPoolOperator.json",
+        "test/generated-artifacts/IStaking.json",
+        "test/generated-artifacts/IZrxTreasury.json",
+        "test/generated-artifacts/ZrxTreasury.json"
+    ],
+    "exclude": ["./deploy/solc/solc_bin"]
+}

contracts/treasury/tslint.json

@@ -0,0 +1,13 @@
+{
+    "extends": ["@0x/tslint-config"],
+    "rules": {
+        "custom-no-magic-numbers": false,
+        "max-file-line-count": false,
+        "no-non-null-assertion": false,
+        "no-unnecessary-type-assertion": false,
+        "number-literal-format": false
+    },
+    "linterOptions": {
+        "exclude": ["src/artifacts.ts", "test/artifacts.ts"]
+    }
+}

contracts/utils/CHANGELOG.json

@@ -1,4 +1,154 @@
 [
+    {
+        "timestamp": 1612950500,
+        "version": "4.7.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1611648096,
+        "version": "4.7.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1610510890,
+        "version": "4.7.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "4.7.0",
+        "changes": [
+            {
+                "note": "Add `LibSafeMathV06.safeDowncastToUint128()`",
+                "pr": 97
+            },
+            {
+                "note": "Add SPDX license identifiers to solidity files",
+                "pr": 105
+            }
+        ],
+        "timestamp": 1609802516
+    },
+    {
+        "timestamp": 1608692071,
+        "version": "4.6.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1608245516,
+        "version": "4.6.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607485227,
+        "version": "4.6.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1607381756,
+        "version": "4.6.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1606961263,
+        "version": "4.6.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "version": "4.6.0",
+        "changes": [
+            {
+                "note": "Add `uint128` functions to `LibSafeMathV06`",
+                "pr": 27
+            }
+        ],
+        "timestamp": 1605763885
+    },
+    {
+        "timestamp": 1605302002,
+        "version": "4.5.8",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604385937,
+        "version": "4.5.7",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604376968,
+        "version": "4.5.6",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1604355662,
+        "version": "4.5.5",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603851023,
+        "version": "4.5.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
+    {
+        "timestamp": 1603833198,
+        "version": "4.5.3",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "version": "4.5.2",
         "changes": [

contracts/utils/CHANGELOG.md

@@ -5,6 +5,71 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.7.3 - _February 10, 2021_
+
+    * Dependencies updated
+
+## v4.7.2 - _January 26, 2021_
+
+    * Dependencies updated
+
+## v4.7.1 - _January 13, 2021_
+
+    * Dependencies updated
+
+## v4.7.0 - _January 4, 2021_
+
+    * Add `LibSafeMathV06.safeDowncastToUint128()` (#97)
+    * Add SPDX license identifiers to solidity files (#105)
+
+## v4.6.5 - _December 23, 2020_
+
+    * Dependencies updated
+
+## v4.6.4 - _December 17, 2020_
+
+    * Dependencies updated
+
+## v4.6.3 - _December 9, 2020_
+
+    * Dependencies updated
+
+## v4.6.2 - _December 7, 2020_
+
+    * Dependencies updated
+
+## v4.6.1 - _December 3, 2020_
+
+    * Dependencies updated
+
+## v4.6.0 - _November 19, 2020_
+
+    * Add `uint128` functions to `LibSafeMathV06` (#27)
+
+## v4.5.8 - _November 13, 2020_
+
+    * Dependencies updated
+
+## v4.5.7 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.5.6 - _November 3, 2020_
+
+    * Dependencies updated
+
+## v4.5.5 - _November 2, 2020_
+
+    * Dependencies updated
+
+## v4.5.4 - _October 28, 2020_
+
+    * Dependencies updated
+
+## v4.5.3 - _October 27, 2020_
+
+    * Dependencies updated
+
 ## v4.5.2 - _October 21, 2020_
 
     * Add Ropsten and Rinkeby addresses to `DeploymentConstants` (#2656)

contracts/utils/contracts/src/DeploymentConstants.sol

@@ -56,8 +56,6 @@ contract DeploymentConstants {
     address constant private MUSD_ADDRESS = 0xe2f2a5C287993345a840Db3B0845fbC70f5935a5;
     /// @dev Mainnet address of the Mooniswap Registry contract
     address constant private MOONISWAP_REGISTRY = 0x71CD6666064C3A1354a3B4dca5fA1E2D3ee7D303;
-    /// @dev Mainnet address of the Shell contract
-    address constant private SHELL_CONTRACT = 0x2E703D658f8dd21709a7B458967aB4081F8D3d05;
     /// @dev Mainnet address of the DODO Registry (ZOO) contract
     address constant private DODO_REGISTRY = 0x3A97247DF274a17C59A3bd12735ea3FcDFb49950;
     /// @dev Mainnet address of the DODO Helper contract
@@ -303,16 +301,6 @@ contract DeploymentConstants {
         return MOONISWAP_REGISTRY;
     }
 
-    /// @dev An overridable way to retrieve the Shell contract address.
-    /// @return registry The Shell contract address.
-    function _getShellAddress()
-        internal
-        view
-        returns (address)
-    {
-        return SHELL_CONTRACT;
-    }
-
     /// @dev An overridable way to retrieve the DODO Registry contract address.
     /// @return registry The DODO Registry contract address.
     function _getDODORegistryAddress()

contracts/utils/contracts/src/v06/AuthorizableV06.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2020 ZeroEx Intl.