Remove MConstants and MixinConstants for LibConstants

packages/contracts/src/2.0.0/forwarder/Forwarder.sol

@@ -21,14 +21,14 @@ pragma experimental ABIEncoderV2;
 
 import "./MixinWeth.sol";
 import "./MixinForwarderCore.sol";
-import "./MixinConstants.sol";
+import "./libs/LibConstants.sol";
 import "./MixinAssets.sol";
 import "./MixinExchangeWrapper.sol";
 
 
 // solhint-disable no-empty-blocks
 contract Forwarder is
-    MixinConstants,
+    LibConstants,
     MixinWeth,
     MixinAssets,
     MixinExchangeWrapper,
@@ -43,7 +43,7 @@ contract Forwarder is
         bytes memory _wethAssetData
     )
         public
-        MixinConstants(
+        LibConstants(
             _exchange,
             _etherToken,
             _zrxToken,

packages/contracts/src/2.0.0/forwarder/MixinAssets.sol

@@ -22,13 +22,13 @@ import "../utils/LibBytes/LibBytes.sol";
 import "../utils/Ownable/Ownable.sol";
 import "../tokens/ERC20Token/IERC20Token.sol";
 import "../tokens/ERC721Token/IERC721Token.sol";
+import "./libs/LibConstants.sol";
 import "./mixins/MAssets.sol";
-import "./mixins/MConstants.sol";
 
 
 contract MixinAssets is
     Ownable,
-    MConstants,
+    LibConstants,
     MAssets
 {
 

packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol

@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "./mixins/MConstants.sol";
+import "./libs/LibConstants.sol";
 import "./mixins/MExchangeWrapper.sol";
 import "../protocol/Exchange/libs/LibAbiEncoder.sol";
 import "../protocol/Exchange/libs/LibOrder.sol";
@@ -31,7 +31,7 @@ contract MixinExchangeWrapper is
     LibAbiEncoder,
     LibFillResults,
     LibMath,
-    MConstants,
+    LibConstants,
     MExchangeWrapper
 {
 

packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol

@@ -19,9 +19,9 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
+import "./libs/LibConstants.sol";
 import "./mixins/MWeth.sol";
 import "./mixins/MAssets.sol";
-import "./mixins/MConstants.sol";
 import "./mixins/MExchangeWrapper.sol";
 import "./mixins/MForwarderCore.sol";
 import "../utils/LibBytes/LibBytes.sol";
@@ -33,7 +33,7 @@ import "../protocol/Exchange/libs/LibMath.sol";
 contract MixinForwarderCore is
     LibFillResults,
     LibMath,
-    MConstants,
+    LibConstants,
     MWeth,
     MAssets,
     MExchangeWrapper,

packages/contracts/src/2.0.0/forwarder/MixinWeth.sol

@@ -19,13 +19,13 @@
 pragma solidity 0.4.24;
 
 import "../protocol/Exchange/libs/LibMath.sol";
-import "./mixins/MConstants.sol";
+import "./libs/LibConstants.sol";
 import "./mixins/MWeth.sol";
 
 
 contract MixinWeth is
     LibMath,
-    MConstants,
+    LibConstants,
     MWeth
 {
 

packages/contracts/src/2.0.0/forwarder/libs/LibConstants.sol

@@ -18,12 +18,12 @@
 
 pragma solidity 0.4.24;
 
-import "./mixins/MConstants.sol";
+import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "../../tokens/EtherToken/IEtherToken.sol";
+import "../../tokens/ERC20Token/IERC20Token.sol";
 
 
-contract MixinConstants is
+contract LibConstants {
-    MConstants
-{
 
     bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)"));
     bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256,bytes)"));
@@ -32,6 +32,14 @@ contract MixinConstants is
     uint256 constant internal MAX_FEE_PERCENTAGE = 5 * PERCENTAGE_DENOMINATOR / 100;         // 5%
     uint256 constant internal MAX_WETH_FILL_PERCENTAGE = 95 * PERCENTAGE_DENOMINATOR / 100;  // 95%
  
+     // solhint-disable var-name-mixedcase
+    IExchange internal EXCHANGE;
+    IEtherToken internal ETHER_TOKEN;
+    IERC20Token internal ZRX_TOKEN;
+    bytes internal ZRX_ASSET_DATA;
+    bytes internal WETH_ASSET_DATA;
+    // solhint-enable var-name-mixedcase
+
     constructor (
         address _exchange,
         address _etherToken,

packages/contracts/src/2.0.0/forwarder/mixins/MConstants.sol

@@ -1,42 +0,0 @@
-/*
-
-  Copyright 2018 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 0.4.24;
-
-import "../../protocol/Exchange/interfaces/IExchange.sol";
-import "../../tokens/EtherToken/IEtherToken.sol";
-import "../../tokens/ERC20Token/IERC20Token.sol";
-
-
-contract MConstants {
-
-    bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)"));
-    bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256,bytes)"));
-    uint256 constant internal MAX_UINT = 2**256 - 1;
-    uint256 constant internal PERCENTAGE_DENOMINATOR = 10**18; 
-    uint256 constant internal MAX_FEE_PERCENTAGE = 5 * PERCENTAGE_DENOMINATOR / 100;         // 5%
-    uint256 constant internal MAX_WETH_FILL_PERCENTAGE = 95 * PERCENTAGE_DENOMINATOR / 100;  // 95%
-
-    // solhint-disable var-name-mixedcase
-    IExchange internal EXCHANGE;
-    IEtherToken internal ETHER_TOKEN;
-    IERC20Token internal ZRX_TOKEN;
-    bytes internal ZRX_ASSET_DATA;
-    bytes internal WETH_ASSET_DATA;
-    // solhint-enable var-name-mixedcase
-}