Publish

- @0x/contracts-asset-proxy@3.7.4
 - @0x/contracts-broker@1.1.22
 - @0x/contracts-coordinator@3.1.23
 - @0x/contracts-dev-utils@1.3.21
 - @0x/contracts-erc1155@2.1.22
 - @0x/contracts-erc20@3.3.1
 - @0x/contracts-erc721@3.1.22
 - @0x/contracts-exchange-forwarder@4.2.23
 - @0x/contracts-exchange-libs@4.3.22
 - @0x/contracts-exchange@3.2.23
 - @0x/contracts-extensions@6.2.17
 - @0x/contracts-integrations@2.7.23
 - @0x/contracts-multisig@4.1.23
 - @0x/contracts-staking@2.0.30
 - @0x/contracts-test-utils@5.3.19
 - @0x/contracts-utils@4.7.1
 - @0x/contracts-zero-ex@0.18.0
 - @0x/asset-swapper@5.8.0
 - @0x/contract-addresses@5.9.0
 - @0x/contract-wrappers-test@12.2.34
 - @0x/contract-wrappers@13.12.1
 - @0x/migrations@6.5.10
 - @0x/order-utils@10.4.14
 - @0x/protocol-utils@1.1.4

contracts/asset-proxy/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "3.7.4",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "3.7.3",

contracts/asset-proxy/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.7.4 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v3.7.3 - _January 4, 2021_
 
     * Dependencies updated

contracts/asset-proxy/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-asset-proxy",
-    "version": "3.7.3",
+    "version": "3.7.4",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,10 +52,10 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/protocol",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contract-wrappers": "^13.12.0",
+        "@0x/contract-wrappers": "^13.12.1",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
@@ -80,11 +80,11 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.2.14",
-        "@0x/contracts-erc1155": "^2.1.21",
+        "@0x/contracts-erc1155": "^2.1.22",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
-        "@0x/contracts-erc721": "^3.1.21",
+        "@0x/contracts-erc721": "^3.1.22",
-        "@0x/contracts-exchange-libs": "^4.3.21",
+        "@0x/contracts-exchange-libs": "^4.3.22",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/types": "^3.3.1",
         "@0x/typescript-typings": "^5.1.6",
         "@0x/utils": "^6.1.1",

contracts/broker/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "1.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "1.1.21",

contracts/broker/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.1.22 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v1.1.21 - _January 4, 2021_
 
     * Dependencies updated

contracts/broker/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-broker",
-    "version": "1.1.21",
+    "version": "1.1.22",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,14 +52,14 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
-        "@0x/contracts-erc721": "^3.1.21",
+        "@0x/contracts-erc721": "^3.1.22",
-        "@0x/contracts-exchange": "^3.2.22",
+        "@0x/contracts-exchange": "^3.2.23",
-        "@0x/contracts-exchange-libs": "^4.3.21",
+        "@0x/contracts-exchange-libs": "^4.3.22",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
@@ -85,7 +85,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.2.14",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/typescript-typings": "^5.1.6",
         "@0x/utils": "^6.1.1",
         "ethereum-types": "^3.4.0"

contracts/coordinator/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "3.1.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "3.1.22",

contracts/coordinator/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.1.23 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v3.1.22 - _January 4, 2021_
 
     * Dependencies updated

contracts/coordinator/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-coordinator",
-    "version": "3.1.22",
+    "version": "3.1.23",
     "engines": {
         "node": ">=6.12"
     },
@@ -53,12 +53,12 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-dev-utils": "^1.3.20",
+        "@0x/contracts-dev-utils": "^1.3.21",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
         "@0x/contracts-gen": "^2.0.24",
         "@0x/dev-utils": "^4.1.3",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
@@ -84,10 +84,10 @@
     "dependencies": {
         "@0x/assert": "^3.0.19",
         "@0x/base-contract": "^6.2.14",
-        "@0x/contract-addresses": "^5.8.0",
+        "@0x/contract-addresses": "^5.9.0",
-        "@0x/contracts-exchange": "^3.2.22",
+        "@0x/contracts-exchange": "^3.2.23",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/json-schemas": "^5.3.4",
         "@0x/types": "^3.3.1",
         "@0x/typescript-typings": "^5.1.6",

contracts/dev-utils/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "1.3.21",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "1.3.20",

contracts/dev-utils/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v1.3.21 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v1.3.20 - _January 4, 2021_
 
     * Dependencies updated

contracts/dev-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-dev-utils",
-    "version": "1.3.20",
+    "version": "1.3.21",
     "engines": {
         "node": ">=6.12"
     },
@@ -43,10 +43,10 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
         "@0x/assert": "^3.0.19",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",

contracts/erc1155/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "2.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "2.1.21",

contracts/erc1155/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.1.22 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v2.1.21 - _January 4, 2021_
 
     * Dependencies updated

contracts/erc1155/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc1155",
-    "version": "2.1.21",
+    "version": "2.1.22",
     "engines": {
         "node": ">=6.12"
     },
@@ -54,7 +54,7 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
@@ -81,7 +81,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.2.14",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
         "@0x/utils": "^6.1.1",
         "@0x/web3-wrapper": "^7.3.0",
         "lodash": "^4.17.11"

contracts/erc20/CHANGELOG.json

@@ -1,7 +1,20 @@
 [
+    {
+        "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

contracts/erc20/CHANGELOG.md

@@ -5,8 +5,13 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## 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_

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.

contracts/erc20/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc20",
-    "version": "3.3.0",
+    "version": "3.3.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -53,8 +53,8 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",

contracts/erc721/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "3.1.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "3.1.21",

contracts/erc721/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.1.22 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v3.1.21 - _January 4, 2021_
 
     * Dependencies updated

contracts/erc721/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-erc721",
-    "version": "3.1.21",
+    "version": "3.1.22",
     "engines": {
         "node": ">=6.12"
     },
@@ -54,8 +54,8 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",

contracts/exchange-forwarder/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "4.2.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "4.2.22",

contracts/exchange-forwarder/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.2.23 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v4.2.22 - _January 4, 2021_
 
     * Dependencies updated

contracts/exchange-forwarder/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-forwarder",
-    "version": "4.2.22",
+    "version": "4.2.23",
     "engines": {
         "node": ">=6.12"
     },
@@ -53,18 +53,18 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-dev-utils": "^1.3.20",
+        "@0x/contracts-dev-utils": "^1.3.21",
-        "@0x/contracts-erc1155": "^2.1.21",
+        "@0x/contracts-erc1155": "^2.1.22",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
-        "@0x/contracts-erc721": "^3.1.21",
+        "@0x/contracts-erc721": "^3.1.22",
-        "@0x/contracts-exchange": "^3.2.22",
+        "@0x/contracts-exchange": "^3.2.23",
-        "@0x/contracts-exchange-libs": "^4.3.21",
+        "@0x/contracts-exchange-libs": "^4.3.22",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",

contracts/exchange-libs/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "4.3.22",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "4.3.21",

contracts/exchange-libs/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.3.22 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v4.3.21 - _January 4, 2021_
 
     * Dependencies updated

contracts/exchange-libs/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange-libs",
-    "version": "4.3.21",
+    "version": "4.3.22",
     "engines": {
         "node": ">=6.12"
     },
@@ -81,9 +81,9 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.2.14",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/types": "^3.3.1",
         "@0x/typescript-typings": "^5.1.6",
         "@0x/utils": "^6.1.1",

contracts/exchange/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "3.2.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "3.2.22",

contracts/exchange/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v3.2.23 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v3.2.22 - _January 4, 2021_
 
     * Dependencies updated

contracts/exchange/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-exchange",
-    "version": "3.2.22",
+    "version": "3.2.23",
     "engines": {
         "node": ">=6.12"
     },
@@ -53,13 +53,13 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/protocol",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-exchange-libs": "^4.3.21",
+        "@0x/contracts-exchange-libs": "^4.3.22",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-multisig": "^4.1.22",
+        "@0x/contracts-multisig": "^4.1.23",
-        "@0x/contracts-staking": "^2.0.29",
+        "@0x/contracts-staking": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
@@ -89,11 +89,11 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.2.14",
-        "@0x/contracts-dev-utils": "^1.3.20",
+        "@0x/contracts-dev-utils": "^1.3.21",
-        "@0x/contracts-erc1155": "^2.1.21",
+        "@0x/contracts-erc1155": "^2.1.22",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
-        "@0x/contracts-erc721": "^3.1.21",
+        "@0x/contracts-erc721": "^3.1.22",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/utils": "^6.1.1",
         "lodash": "^4.17.11"
     },

contracts/extensions/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "6.2.17",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "6.2.16",

contracts/extensions/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.2.17 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v6.2.16 - _January 4, 2021_
 
     * Dependencies updated

contracts/extensions/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-extensions",
-    "version": "6.2.16",
+    "version": "6.2.17",
     "engines": {
         "node": ">=6.12"
     },
@@ -53,16 +53,16 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-dev-utils": "^1.3.20",
+        "@0x/contracts-dev-utils": "^1.3.21",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
-        "@0x/contracts-erc721": "^3.1.21",
+        "@0x/contracts-erc721": "^3.1.22",
-        "@0x/contracts-exchange": "^3.2.22",
+        "@0x/contracts-exchange": "^3.2.23",
-        "@0x/contracts-exchange-libs": "^4.3.21",
+        "@0x/contracts-exchange-libs": "^4.3.22",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
@@ -91,7 +91,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.2.14",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
         "@0x/typescript-typings": "^5.1.6",
         "ethereum-types": "^3.4.0"
     },

contracts/integrations/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-integrations",
-    "version": "2.7.22",
+    "version": "2.7.23",
     "private": true,
     "engines": {
         "node": ">=6.12"
@@ -53,21 +53,21 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/extensions",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contract-addresses": "^5.8.0",
+        "@0x/contract-addresses": "^5.9.0",
-        "@0x/contract-wrappers": "^13.12.0",
+        "@0x/contract-wrappers": "^13.12.1",
-        "@0x/contracts-broker": "^1.1.21",
+        "@0x/contracts-broker": "^1.1.22",
-        "@0x/contracts-coordinator": "^3.1.22",
+        "@0x/contracts-coordinator": "^3.1.23",
-        "@0x/contracts-dev-utils": "^1.3.20",
+        "@0x/contracts-dev-utils": "^1.3.21",
-        "@0x/contracts-exchange-forwarder": "^4.2.22",
+        "@0x/contracts-exchange-forwarder": "^4.2.23",
-        "@0x/contracts-exchange-libs": "^4.3.21",
+        "@0x/contracts-exchange-libs": "^4.3.22",
-        "@0x/contracts-extensions": "^6.2.16",
+        "@0x/contracts-extensions": "^6.2.17",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/coordinator-server": "^1.0.5",
         "@0x/dev-utils": "^4.1.3",
-        "@0x/migrations": "^6.5.9",
+        "@0x/migrations": "^6.5.10",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
-        "@0x/protocol-utils": "^1.1.3",
+        "@0x/protocol-utils": "^1.1.4",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/tslint-config": "^4.1.3",
         "@0x/web3-wrapper": "^7.3.0",
@@ -93,17 +93,17 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/asset-swapper": "^5.6.2",
+        "@0x/asset-swapper": "^5.8.0",
         "@0x/base-contract": "^6.2.14",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-erc1155": "^2.1.21",
+        "@0x/contracts-erc1155": "^2.1.22",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
-        "@0x/contracts-erc721": "^3.1.21",
+        "@0x/contracts-erc721": "^3.1.22",
-        "@0x/contracts-exchange": "^3.2.22",
+        "@0x/contracts-exchange": "^3.2.23",
-        "@0x/contracts-multisig": "^4.1.22",
+        "@0x/contracts-multisig": "^4.1.23",
-        "@0x/contracts-staking": "^2.0.29",
+        "@0x/contracts-staking": "^2.0.30",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-zero-ex": "^0.17.0",
+        "@0x/contracts-zero-ex": "^0.18.0",
         "@0x/subproviders": "^6.2.3",
         "@0x/types": "^3.3.1",
         "@0x/typescript-typings": "^5.1.6",

contracts/multisig/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "4.1.23",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "4.1.22",

contracts/multisig/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v4.1.23 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v4.1.22 - _January 4, 2021_
 
     * Dependencies updated

contracts/multisig/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-multisig",
-    "version": "4.1.22",
+    "version": "4.1.23",
     "engines": {
         "node": ">=6.12"
     },
@@ -50,11 +50,11 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/multisig",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/tslint-config": "^4.1.3",

contracts/staking/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "2.0.30",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "2.0.29",

contracts/staking/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v2.0.30 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v2.0.29 - _January 4, 2021_
 
     * Dependencies updated

contracts/staking/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-staking",
-    "version": "2.0.29",
+    "version": "2.0.30",
     "engines": {
         "node": ">=6.12"
     },
@@ -54,14 +54,14 @@
     "homepage": "https://github.com/0xProject/protocol/tree/main/contracts/tokens",
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
-        "@0x/contracts-asset-proxy": "^3.7.3",
+        "@0x/contracts-asset-proxy": "^3.7.4",
-        "@0x/contracts-dev-utils": "^1.3.20",
+        "@0x/contracts-dev-utils": "^1.3.21",
-        "@0x/contracts-erc20": "^3.3.0",
+        "@0x/contracts-erc20": "^3.3.1",
-        "@0x/contracts-exchange-libs": "^4.3.21",
+        "@0x/contracts-exchange-libs": "^4.3.22",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-utils": "^4.7.0",
+        "@0x/contracts-utils": "^4.7.1",
         "@0x/dev-utils": "^4.1.3",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/ts-doc-gen": "^0.0.28",
         "@0x/tslint-config": "^4.1.3",
@@ -88,7 +88,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.2.14",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
         "@0x/typescript-typings": "^5.1.6",
         "@0x/utils": "^6.1.1",
         "ethereum-types": "^3.4.0",

contracts/test-utils/CHANGELOG.json

@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1610510890,
+        "version": "5.3.19",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
     {
         "timestamp": 1609802516,
         "version": "5.3.18",

contracts/test-utils/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v5.3.19 - _January 13, 2021_
+
+    * Dependencies updated
+
 ## v5.3.18 - _January 4, 2021_
 
     * Dependencies updated

contracts/test-utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-test-utils",
-    "version": "5.3.18",
+    "version": "5.3.19",
     "engines": {
         "node": ">=6.12"
     },
@@ -44,10 +44,10 @@
     "dependencies": {
         "@0x/assert": "^3.0.19",
         "@0x/base-contract": "^6.2.14",
-        "@0x/contract-addresses": "^5.8.0",
+        "@0x/contract-addresses": "^5.9.0",
         "@0x/dev-utils": "^4.1.3",
         "@0x/json-schemas": "^5.3.4",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/sol-coverage": "^4.0.24",
         "@0x/sol-profiler": "^4.1.14",
         "@0x/sol-trace": "^3.0.24",

contracts/utils/CHANGELOG.json

@@ -1,10 +1,23 @@
 [
+    {
+        "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

contracts/utils/CHANGELOG.md

@@ -5,9 +5,14 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## 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_
 

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

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

contracts/utils/contracts/src/v06/LibBytesV06.sol

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

contracts/utils/contracts/src/v06/LibMathV06.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2019 ZeroEx Intl.

contracts/utils/contracts/src/v06/LibSafeMathV06.sol

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

contracts/utils/contracts/src/v06/OwnableV06.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2019 ZeroEx Intl.

contracts/utils/contracts/src/v06/ReentrancyGuardV06.sol

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

contracts/utils/contracts/src/v06/errors/LibAuthorizableRichErrorsV06.sol

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

contracts/utils/contracts/src/v06/errors/LibBytesRichErrorsV06.sol

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

contracts/utils/contracts/src/v06/errors/LibMathRichErrorsV06.sol

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

contracts/utils/contracts/src/v06/errors/LibOwnableRichErrorsV06.sol

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

contracts/utils/contracts/src/v06/errors/LibReentrancyGuardRichErrorsV06.sol

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

contracts/utils/contracts/src/v06/errors/LibRichErrorsV06.sol

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

contracts/utils/contracts/src/v06/errors/LibSafeMathRichErrorsV06.sol

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

contracts/utils/contracts/src/v06/interfaces/IAuthorizableV06.sol

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

contracts/utils/contracts/src/v06/interfaces/IOwnableV06.sol

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

contracts/utils/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-utils",
-    "version": "4.7.0",
+    "version": "4.7.1",
     "engines": {
         "node": ">=6.12"
     },
@@ -52,9 +52,9 @@
     "devDependencies": {
         "@0x/abi-gen": "^5.4.13",
         "@0x/contracts-gen": "^2.0.24",
-        "@0x/contracts-test-utils": "^5.3.18",
+        "@0x/contracts-test-utils": "^5.3.19",
         "@0x/dev-utils": "^4.1.3",
-        "@0x/order-utils": "^10.4.13",
+        "@0x/order-utils": "^10.4.14",
         "@0x/sol-compiler": "^4.4.1",
         "@0x/tslint-config": "^4.1.3",
         "@0x/types": "^3.3.1",

contracts/zero-ex/CHANGELOG.json

@@ -1,10 +1,28 @@
 [
+    {
+        "version": "0.18.0",
+        "changes": [
+            {
+                "note": "Use consistent returndatasize checks in UniswapFeature",
+                "pr": 96
+            },
+            {
+                "note": "Remove `MetaTransactionsFeature._executeMetaTransaction()` and `SignatureValidatorFeature`",
+                "pr": 109
+            }
+        ],
+        "timestamp": 1610510890
+    },
     {
         "version": "0.17.0",
         "changes": [
             {
                 "note": "Add DevUtils-like functions to `NativeOrdersFeature`",
                 "pr": 97
+            },
+            {
+                "note": "Add SPDX license identifiers to solidity files",
+                "pr": 105
             }
         ],
         "timestamp": 1609802516

contracts/zero-ex/CHANGELOG.md

@@ -5,9 +5,15 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v0.18.0 - _January 13, 2021_
+
+    * Use consistent returndatasize checks in UniswapFeature (#96)
+    * Remove `MetaTransactionsFeature._executeMetaTransaction()` and `SignatureValidatorFeature` (#109)
+
 ## v0.17.0 - _January 4, 2021_
 
     * Add DevUtils-like functions to `NativeOrdersFeature` (#97)
+    * Add SPDX license identifiers to solidity files (#105)
 
 ## v0.16.0 - _December 23, 2020_
 

contracts/zero-ex/contracts/src/IZeroEx.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2020 ZeroEx Intl.
@@ -22,7 +23,6 @@ pragma experimental ABIEncoderV2;
 import "./features/IOwnableFeature.sol";
 import "./features/ISimpleFunctionRegistryFeature.sol";
 import "./features/ITokenSpenderFeature.sol";
-import "./features/ISignatureValidatorFeature.sol";
 import "./features/ITransformERC20Feature.sol";
 import "./features/IMetaTransactionsFeature.sol";
 import "./features/IUniswapFeature.sol";
@@ -35,7 +35,6 @@ interface IZeroEx is
     IOwnableFeature,
     ISimpleFunctionRegistryFeature,
     ITokenSpenderFeature,
-    ISignatureValidatorFeature,
     ITransformERC20Feature,
     IMetaTransactionsFeature,
     IUniswapFeature,

contracts/zero-ex/contracts/src/ZeroEx.sol

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

contracts/zero-ex/contracts/src/ZeroExOptimized.sol

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

contracts/zero-ex/contracts/src/errors/LibCommonRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibLiquidityProviderRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibMetaTransactionsRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibNativeOrdersRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibOwnableRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibProxyRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibSignatureRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibSimpleFunctionRegistryRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibSpenderRichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibTransformERC20RichErrors.sol

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

contracts/zero-ex/contracts/src/errors/LibWalletRichErrors.sol

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

contracts/zero-ex/contracts/src/external/AllowanceTarget.sol

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

contracts/zero-ex/contracts/src/external/FeeCollector.sol

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

contracts/zero-ex/contracts/src/external/FeeCollectorController.sol

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

contracts/zero-ex/contracts/src/external/FlashWallet.sol

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

contracts/zero-ex/contracts/src/external/IAllowanceTarget.sol

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

contracts/zero-ex/contracts/src/external/IFlashWallet.sol

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

contracts/zero-ex/contracts/src/external/ILiquidityProviderSandbox.sol

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

contracts/zero-ex/contracts/src/external/LibFeeCollector.sol

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

contracts/zero-ex/contracts/src/external/LiquidityProviderSandbox.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
   Copyright 2020 ZeroEx Intl.
   Licensed under the Apache License, Version 2.0 (the "License");

contracts/zero-ex/contracts/src/external/PermissionlessTransformerDeployer.sol

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

contracts/zero-ex/contracts/src/external/TransformerDeployer.sol

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

contracts/zero-ex/contracts/src/features/BootstrapFeature.sol

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

contracts/zero-ex/contracts/src/features/IBootstrapFeature.sol

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

contracts/zero-ex/contracts/src/features/IFeature.sol

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

contracts/zero-ex/contracts/src/features/ILiquidityProviderFeature.sol

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

contracts/zero-ex/contracts/src/features/IMetaTransactionsFeature.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 
   Copyright 2020 ZeroEx Intl.
@@ -85,21 +86,6 @@ interface IMetaTransactionsFeature {
         payable
         returns (bytes[] memory returnResults);
 
-    /// @dev Execute a meta-transaction via `sender`. Privileged variant.
-    ///      Only callable from within.
-    /// @param sender Who is executing the meta-transaction.
-    /// @param mtx The meta-transaction.
-    /// @param signature The signature by `mtx.signer`.
-    /// @return returnResult The ABI-encoded result of the underlying call.
-    function _executeMetaTransaction(
-        address sender,
-        MetaTransactionData memory mtx,
-        LibSignature.Signature memory signature
-    )
-        external
-        payable
-        returns (bytes memory returnResult);
-
     /// @dev Get the block at which a meta-transaction has been executed.
     /// @param mtx The meta-transaction.
     /// @return blockNumber The block height when the meta-transactioin was executed.

contracts/zero-ex/contracts/src/features/INativeOrdersFeature.sol

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

contracts/zero-ex/contracts/src/features/IOwnableFeature.sol

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

contracts/zero-ex/contracts/src/features/ISignatureValidatorFeature.sol

@@ -1,63 +0,0 @@
-/*
-
-  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;
-pragma experimental ABIEncoderV2;
-
-
-/// @dev Feature for validating signatures.
-interface ISignatureValidatorFeature {
-
-   /// @dev Allowed signature types.
-    enum SignatureType {
-        Illegal,                     // 0x00, default value
-        Invalid,                     // 0x01
-        EIP712,                      // 0x02
-        EthSign,                     // 0x03
-        NSignatureTypes              // 0x04, number of signature types. Always leave at end.
-    }
-
-    /// @dev Validate that `hash` was signed by `signer` given `signature`.
-    ///      Reverts otherwise.
-    /// @param hash The hash that was signed.
-    /// @param signer The signer of the hash.
-    /// @param signature The signature. The last byte of this signature should
-    ///        be a member of the `SignatureType` enum.
-    function validateHashSignature(
-        bytes32 hash,
-        address signer,
-        bytes calldata signature
-    )
-        external
-        view;
-
-    /// @dev Check that `hash` was signed by `signer` given `signature`.
-    /// @param hash The hash that was signed.
-    /// @param signer The signer of the hash.
-    /// @param signature The signature. The last byte of this signature should
-    ///        be a member of the `SignatureType` enum.
-    /// @return isValid `true` on success.
-    function isValidHashSignature(
-        bytes32 hash,
-        address signer,
-        bytes calldata signature
-    )
-        external
-        view
-        returns (bool isValid);
-}

contracts/zero-ex/contracts/src/features/ISimpleFunctionRegistryFeature.sol

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