Updated CHANGELOGS

Omit building website before publish
Add new RC versions to changelog so that these packages are publised as RC's
2018-07-23 19:29:10 +02:00 · 2018-07-23 19:28:27 +02:00 · 2018-07-23 19:18:09 +02:00 · 2018-07-23 19:11:48 +02:00 · 2018-07-23 19:09:35 +02:00 · 2018-07-23 19:09:24 +02:00
146 changed files with 3155 additions and 2794 deletions
--- a/lerna.json
+++ b/lerna.json
@@ -9,5 +9,6 @@
        }
    },
    "npmClient": "yarn",
-    "useWorkspaces": true
+    "useWorkspaces": true,
+    "registry": "http://localhost:4873"
 }
--- a/package.json
+++ b/package.json
@@ -13,8 +13,8 @@
        "prettier:ci": "prettier --list-different '**/*.{ts,tsx,json,md}' --config .prettierrc",
        "report_coverage": "lcov-result-merger 'packages/*/coverage/lcov.info' | coveralls",
        "test:installation": "node ./packages/monorepo-scripts/lib/test_installation.js",
-        "run:publish": "run-s install:all build:monorepo_scripts script:prepublish_checks rebuild script:publish",
-        "run:publish:dry": "run-s install:all build:monorepo_scripts script:prepublish_checks rebuild script:publish:dry",
+        "run:publish": "run-s install:all build:monorepo_scripts script:prepublish_checks rebuild:no_website script:publish",
+        "run:publish:dry": "run-s install:all build:monorepo_scripts script:prepublish_checks rebuild:no_website script:publish:dry",
        "script:prepublish_checks": "node ./packages/monorepo-scripts/lib/prepublish_checks.js",
        "script:publish": "node ./packages/monorepo-scripts/lib/publish.js",
        "script:publish:dry": "IS_DRY_RUN=true yarn script:publish",
@@ -23,10 +23,12 @@
        "lerna:run": "lerna run",
        "watch": "wsrun watch_without_deps $PKG --fast-exit -r --stages --done-criteria='complete|successfully'",
        "build": "wsrun build $PKG --fast-exit -r --stages",
+        "build:no_website": "wsrun build $PKG --fast-exit -r --stages --exclude @0xproject/website",
        "build:monorepo_scripts": "PKG=@0xproject/monorepo-scripts yarn build",
        "clean": "wsrun clean $PKG --fast-exit -r --parallel",
        "remove_node_modules": "lerna clean --yes; rm -rf node_modules",
        "rebuild": "run-s clean build",
+        "rebuild:no_website": "run-s clean build:no_website",
        "test": "wsrun test $PKG --fast-exit --serial --exclude-missing",
        "stage_docs": "wsrun docs:stage $PKG --fast-exit --parallel --exclude-missing",
        "lint": "wsrun lint $PKG --fast-exit --parallel --exclude-missing",
--- a/packages/0x.js/CHANGELOG.json
+++ b/packages/0x.js/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "version": "1.0.1-rc.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1532366696
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.0",
--- a/packages/0x.js/CHANGELOG.md
+++ b/packages/0x.js/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.1-rc.1 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.0 - _July 23, 2018_

    * Dependencies updated
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -1,6 +1,6 @@
 {
    "name": "0x.js",
-    "version": "1.0.0-rc.2",
+    "version": "1.0.0",
    "engines": {
        "node": ">=6.12"
    },
@@ -68,11 +68,11 @@
    },
    "license": "Apache-2.0",
    "devDependencies": {
-        "@0xproject/abi-gen": "^1.0.0",
-        "@0xproject/dev-utils": "^1.0.0",
-        "@0xproject/migrations": "^1.0.0",
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/abi-gen": "^1.0.1",
+        "@0xproject/dev-utils": "^1.0.1",
+        "@0xproject/migrations": "^1.0.1",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^2.2.42",
        "@types/node": "^8.0.53",
@@ -98,17 +98,17 @@
        "webpack": "^3.1.0"
    },
    "dependencies": {
-        "@0xproject/assert": "^1.0.0",
-        "@0xproject/base-contract": "^1.0.0",
-        "@0xproject/contract-wrappers": "^1.0.0-rc.1",
-        "@0xproject/order-utils": "^1.0.0-rc.1",
-        "@0xproject/sol-compiler": "^1.0.0",
-        "@0xproject/subproviders": "^1.0.0",
-        "@0xproject/types": "^1.0.0-rc.1",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
-        "ethereum-types": "^1.0.0",
+        "@0xproject/assert": "^1.0.1",
+        "@0xproject/base-contract": "^1.0.1",
+        "@0xproject/contract-wrappers": "^1.0.0",
+        "@0xproject/order-utils": "^1.0.0",
+        "@0xproject/sol-compiler": "^1.0.1",
+        "@0xproject/subproviders": "^1.0.1",
+        "@0xproject/types": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
+        "ethereum-types": "^1.0.1",
        "ethers": "3.0.22",
        "lodash": "^4.17.4"
    },
--- a/packages/abi-gen/CHANGELOG.json
+++ b/packages/abi-gen/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "version": "1.0.1",
        "changes": [
--- a/packages/abi-gen/CHANGELOG.md
+++ b/packages/abi-gen/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Fix the abi-gen entry point in package.json (#901)
--- a/packages/abi-gen/package.json
+++ b/packages/abi-gen/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/abi-gen",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -32,10 +32,10 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/abi-gen/README.md",
    "dependencies": {
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
        "chalk": "^2.3.0",
-        "ethereum-types": "^1.0.0",
+        "ethereum-types": "^1.0.1",
        "glob": "^7.1.2",
        "handlebars": "^4.0.11",
        "lodash": "^4.17.4",
@@ -46,8 +46,8 @@
        "yargs": "^10.0.3"
    },
    "devDependencies": {
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/glob": "5.0.35",
        "@types/handlebars": "^4.0.36",
        "@types/mkdirp": "^0.5.1",
--- a/packages/assert/CHANGELOG.json
+++ b/packages/assert/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.1",
--- a/packages/assert/CHANGELOG.md
+++ b/packages/assert/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Dependencies updated
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/assert",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -31,8 +31,8 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/assert/README.md",
    "devDependencies": {
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^2.2.42",
        "@types/valid-url": "^1.0.2",
@@ -48,9 +48,9 @@
        "typescript": "2.7.1"
    },
    "dependencies": {
-        "@0xproject/json-schemas": "^1.0.0-rc.1",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
+        "@0xproject/json-schemas": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
        "lodash": "^4.17.4",
        "valid-url": "^1.0.9"
    },
--- a/packages/base-contract/CHANGELOG.json
+++ b/packages/base-contract/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.1",
--- a/packages/base-contract/CHANGELOG.md
+++ b/packages/base-contract/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Dependencies updated
--- a/packages/base-contract/package.json
+++ b/packages/base-contract/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/base-contract",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -30,8 +30,8 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/base-contract/README.md",
    "devDependencies": {
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/lodash": "4.14.104",
        "chai": "^4.0.1",
        "copyfiles": "^1.2.0",
@@ -43,10 +43,10 @@
        "typescript": "2.7.1"
    },
    "dependencies": {
-        "ethereum-types": "^1.0.0",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
+        "ethereum-types": "^1.0.1",
        "ethers": "3.0.22",
        "lodash": "^4.17.4"
    },
--- a/packages/connect/CHANGELOG.json
+++ b/packages/connect/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.1",
--- a/packages/connect/CHANGELOG.md
+++ b/packages/connect/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Dependencies updated
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/connect",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -54,16 +54,16 @@
        "@0xproject/assert": "^0.2.14",
        "@0xproject/json-schemas": "^0.8.3",
        "@0xproject/types": "^0.8.2",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
        "lodash": "^4.17.4",
        "query-string": "^5.0.1",
        "sinon": "^4.0.0",
        "websocket": "^1.0.25"
    },
    "devDependencies": {
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/fetch-mock": "^5.12.2",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^2.2.42",
--- a/packages/contract-wrappers/CHANGELOG.json
+++ b/packages/contract-wrappers/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "version": "1.0.1-rc.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1532366696
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.0",
--- a/packages/contract-wrappers/CHANGELOG.md
+++ b/packages/contract-wrappers/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.1-rc.1 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.0 - _July 23, 2018_

    * Dependencies updated
--- a/packages/contract-wrappers/package.json
+++ b/packages/contract-wrappers/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/contract-wrappers",
-    "version": "1.0.0-rc.1",
+    "version": "1.0.0",
    "description": "Smart TS wrappers for 0x smart contracts",
    "keywords": [
        "0xproject",
@@ -35,13 +35,13 @@
        "node": ">=6.0.0"
    },
    "devDependencies": {
-        "@0xproject/abi-gen": "^1.0.0",
-        "@0xproject/dev-utils": "^1.0.0",
-        "@0xproject/migrations": "^1.0.0",
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/sol-compiler": "^1.0.0",
-        "@0xproject/subproviders": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/abi-gen": "^1.0.1",
+        "@0xproject/dev-utils": "^1.0.1",
+        "@0xproject/migrations": "^1.0.1",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/sol-compiler": "^1.0.1",
+        "@0xproject/subproviders": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^2.2.42",
        "@types/node": "^8.0.53",
@@ -61,21 +61,21 @@
        "shx": "^0.2.2",
        "sinon": "^4.0.0",
        "source-map-support": "^0.5.0",
-        "web3-provider-engine": "14.0.6",
        "tslint": "5.11.0",
-        "typescript": "2.7.1"
+        "typescript": "2.7.1",
+        "web3-provider-engine": "14.0.6"
    },
    "dependencies": {
-        "@0xproject/assert": "^1.0.0",
-        "@0xproject/base-contract": "^1.0.0",
-        "@0xproject/order-utils": "^1.0.0-rc.1",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
-        "@0xproject/fill-scenarios": "^1.0.0-rc.1",
-        "@0xproject/json-schemas": "^1.0.0-rc.1",
-        "@0xproject/types": "^1.0.0-rc.1",
-        "ethereum-types": "^1.0.0",
+        "@0xproject/assert": "^1.0.1",
+        "@0xproject/base-contract": "^1.0.1",
+        "@0xproject/fill-scenarios": "^1.0.0",
+        "@0xproject/json-schemas": "^1.0.0",
+        "@0xproject/order-utils": "^1.0.0",
+        "@0xproject/types": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
+        "ethereum-types": "^1.0.1",
        "ethereumjs-blockstream": "5.0.0",
        "ethereumjs-util": "^5.1.1",
        "ethers": "3.0.22",
--- a/packages/contracts/compiler.json
+++ b/packages/contracts/compiler.json
@@ -39,12 +39,13 @@
        "MultiSigWalletWithTimeLock",
        "TestAssetProxyOwner",
        "TestAssetProxyDispatcher",
+        "TestConstants",
        "TestLibBytes",
        "TestLibs",
        "TestSignatureValidator",
-        "TestValidator",
-        "TestWallet",
        "TokenRegistry",
+        "Validator",
+        "Wallet",
        "Whitelist",
        "WETH9",
        "ZRXToken"
--- a/packages/contracts/package.json
+++ b/packages/contracts/package.json
@@ -1,7 +1,7 @@
 {
    "private": true,
    "name": "contracts",
-    "version": "2.1.35",
+    "version": "2.1.36",
    "engines": {
        "node": ">=6.12"
    },
@@ -20,11 +20,14 @@
        "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
        "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
        "test:trace": "SOLIDITY_REVERT_TRACE=true run-s build run_mocha",
-        "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
+        "run_mocha":
+            "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
        "compile": "sol-compiler --contracts-dir src",
        "clean": "shx rm -rf lib generated_contract_wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../contract_templates/contract.handlebars --partials '../contract_templates/partials/**/*.handlebars' --output generated_contract_wrappers --backend ethers",
-        "lint": "tslint --project . --exclude **/src/generated_contract_wrappers/**/* --exclude **/lib/**/* && yarn lint-contracts",
+        "generate_contract_wrappers":
+            "abi-gen --abis  ${npm_package_config_abis} --template ../contract_templates/contract.handlebars --partials '../contract_templates/partials/**/*.handlebars' --output generated_contract_wrappers --backend ethers",
+        "lint":
+            "tslint --project . --exclude **/src/generated_contract_wrappers/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
        "coverage:report:html": "istanbul report html && open coverage/index.html",
        "profiler:report:html": "istanbul report html && open coverage/index.html",
@@ -33,7 +36,8 @@
        "lint-contracts": "solhint src/2.0.0/**/**/**/**/*.sol"
    },
    "config": {
-        "abis": "../migrations/artifacts/2.0.0/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|ERC20Proxy|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|IAssetData|IAssetProxy|MixinAuthorizable|MultiSigWallet|MultiSigWalletWithTimeLock|TestAssetProxyOwner|TestAssetProxyDispatcher|TestLibBytes|TestLibs|TestSignatureValidator|TestValidator|TestWallet|TokenRegistry|Whitelist|WETH9|ZRXToken).json"
+        "abis":
+            "../migrations/artifacts/2.0.0/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|ERC20Proxy|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|IAssetData|IAssetProxy|MixinAuthorizable|MultiSigWallet|MultiSigWalletWithTimeLock|TestAssetProxyOwner|TestAssetProxyDispatcher|TestConstants|TestLibBytes|TestLibs|TestSignatureValidator|Validator|Wallet|TokenRegistry|Whitelist|WETH9|ZRXToken).json"
    },
    "repository": {
        "type": "git",
@@ -46,15 +50,15 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/contracts/README.md",
    "devDependencies": {
-        "@0xproject/abi-gen": "^1.0.0",
-        "@0xproject/dev-utils": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
-        "@0xproject/subproviders": "^1.0.0",
-        "@0xproject/sol-cov": "^1.0.0",
-        "@types/lodash": "4.14.104",
+        "@0xproject/abi-gen": "^1.0.1",
+        "@0xproject/dev-utils": "^1.0.1",
+        "@0xproject/sol-cov": "^1.0.1",
+        "@0xproject/subproviders": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/bn.js": "^4.11.0",
-        "@types/node": "^8.0.53",
        "@types/ethereumjs-abi": "^0.6.0",
+        "@types/lodash": "4.14.104",
+        "@types/node": "^8.0.53",
        "@types/yargs": "^10.0.0",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
@@ -72,15 +76,15 @@
        "yargs": "^10.0.3"
    },
    "dependencies": {
-        "@0xproject/base-contract": "^1.0.0",
-        "@0xproject/order-utils": "^1.0.0-rc.1",
-        "@0xproject/sol-compiler": "^1.0.0",
-        "@0xproject/types": "^1.0.0-rc.1",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
-        "ethereum-types": "^1.0.0",
+        "@0xproject/base-contract": "^1.0.1",
+        "@0xproject/order-utils": "^1.0.0",
+        "@0xproject/sol-compiler": "^1.0.1",
+        "@0xproject/types": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
        "bn.js": "^4.11.8",
+        "ethereum-types": "^1.0.1",
        "ethereumjs-abi": "0.6.5",
        "ethereumjs-util": "^5.1.1",
        "ethers": "3.0.22",
--- a/packages/contracts/src/2.0.0/examples/ExchangeWrapper/ExchangeWrapper.sol
+++ b/packages/contracts/src/2.0.0/examples/ExchangeWrapper/ExchangeWrapper.sol
--- a/packages/contracts/src/2.0.0/test/TestValidator/TestValidator.sol
+++ b/packages/contracts/src/2.0.0/test/TestValidator/TestValidator.sol
@@ -21,7 +21,7 @@ pragma solidity 0.4.24;
 import "../../protocol/Exchange/interfaces/IValidator.sol";


-contract TestValidator is 
+contract Validator is 
    IValidator
 {

@@ -29,7 +29,7 @@ contract TestValidator is
    // solhint-disable-next-line var-name-mixedcase
    address internal VALID_SIGNER;

-    /// @dev constructs a new `TestValidator` with a single valid signer.
+    /// @dev constructs a new `Validator` with a single valid signer.
    /// @param validSigner The sole, valid signer.
    constructor (address validSigner) public {
        VALID_SIGNER = validSigner;
--- a/packages/contracts/src/2.0.0/test/TestWallet/TestWallet.sol
+++ b/packages/contracts/src/2.0.0/test/TestWallet/TestWallet.sol
@@ -22,7 +22,7 @@ import "../../protocol/Exchange/interfaces/IWallet.sol";
 import "../../utils/LibBytes/LibBytes.sol";


-contract TestWallet is 
+contract Wallet is 
    IWallet
 {
    using LibBytes for bytes;
@@ -31,7 +31,7 @@ contract TestWallet is
    // solhint-disable-next-line var-name-mixedcase
    address internal WALLET_OWNER;

-    /// @dev constructs a new `TestWallet` with a single owner.
+    /// @dev constructs a new `Wallet` with a single owner.
    /// @param walletOwner The owner of this wallet.
    constructor (address walletOwner) public {
        WALLET_OWNER = walletOwner;
--- a/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol
+++ b/packages/contracts/src/2.0.0/examples/Whitelist/Whitelist.sol
--- a/packages/contracts/src/2.0.0/forwarder/Forwarder.sol
+++ b/packages/contracts/src/2.0.0/forwarder/Forwarder.sol
@@ -19,20 +19,19 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;

-import "./MixinFees.sol";
+import "./MixinWeth.sol";
 import "./MixinForwarderCore.sol";
-import "./MixinConstants.sol";
-import "./MixinMarketBuyZrx.sol";
-import "./MixinExpectedResults.sol";
-import "./MixinTransfer.sol";
+import "./libs/LibConstants.sol";
+import "./MixinAssets.sol";
+import "./MixinExchangeWrapper.sol";


+// solhint-disable no-empty-blocks
 contract Forwarder is
-    MixinConstants,
-    MixinExpectedResults,
-    MixinFees,
-    MixinMarketBuyZrx,
-    MixinTransfer,
+    LibConstants,
+    MixinWeth,
+    MixinAssets,
+    MixinExchangeWrapper,
    MixinForwarderCore
 {

@@ -44,7 +43,7 @@ contract Forwarder is
        bytes memory _wethAssetData
    )
        public
-        MixinConstants(
+        LibConstants(
            _exchange,
            _etherToken,
            _zrxToken,
--- a/packages/contracts/src/2.0.0/forwarder/MixinTransfer.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinTransfer.sol
@@ -19,58 +19,78 @@
 pragma solidity 0.4.24;

 import "../utils/LibBytes/LibBytes.sol";
+import "../utils/Ownable/Ownable.sol";
+import "../tokens/ERC20Token/IERC20Token.sol";
 import "../tokens/ERC721Token/IERC721Token.sol";
-import "./mixins/MTransfer.sol";
+import "./libs/LibConstants.sol";
+import "./mixins/MAssets.sol";


-contract MixinTransfer is
-    MTransfer
+contract MixinAssets is
+    Ownable,
+    LibConstants,
+    MAssets
 {

    using LibBytes for bytes;

    bytes4 constant internal ERC20_TRANSFER_SELECTOR = bytes4(keccak256("transfer(address,uint256)"));
-    bytes4 constant internal ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,uint256,bytes)"));
-    bytes4 constant internal ERC721_RECEIVED_OPERATOR = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));

-    function onERC721Received(
-        address,
-        uint256,
-        bytes memory
-    )
-        public
-        pure
-        returns(bytes4)
-    {
-        return ERC721_RECEIVED;
-    }
-
-    function onERC721Received(
-        address,
-        address,
-        uint256,
-        bytes memory
-    )
-        public
-        pure
-        returns(bytes4)
-    {
-        return ERC721_RECEIVED_OPERATOR;
-    }
-
-    function transferERC20Token(
+    /// @dev Withdraws ERC20 tokens from this contract. The contract requires a ZRX balance in order to 
+    ///      function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be
+    ///      used to withdraw tokens that were accidentally sent to this contract.
+    /// @param token Address of ERC20 token to withdraw.
+    /// @param amount Amount of ERC20 token to withdraw.
+    function withdrawERC20(
        address token,
-        address to,
+        uint256 amount
+    )
+        external
+        onlyOwner
+    {
+        require(
+            IERC20Token(token).transfer(msg.sender, amount),
+            "WITHDRAWAL_FAILED"
+        );
+    }
+
+    /// @dev Transfers given amount of asset to sender.
+    /// @param assetData Byte array encoded for the respective asset proxy.
+    /// @param amount Amount of asset to transfer to sender.
+    function transferPurchasedAssetToSender(
+        bytes memory assetData,
        uint256 amount
    )
        internal
    {
+        bytes4 proxyId = assetData.readBytes4(0);
+
+        if (proxyId == ERC20_DATA_ID) {
+            transferERC20Token(assetData, amount);
+        } else if (proxyId == ERC721_DATA_ID) {
+            transferERC721Token(assetData, amount);
+        } else {
+            revert("UNSUPPORTED_TOKEN_PROXY");
+        }
+    }
+
+    /// @dev Decodes ERC20 assetData and transfers given amount to sender.
+    /// @param assetData Byte array encoded for the respective asset proxy.
+    /// @param amount Amount of asset to transfer to sender.
+    function transferERC20Token(
+        bytes memory assetData,
+        uint256 amount
+    )
+        internal
+    {
+        address token = assetData.readAddress(16);
+
        // Transfer tokens.
        // We do a raw call so we can check the success separate
        // from the return data.
        bool success = token.call(abi.encodeWithSelector(
            ERC20_TRANSFER_SELECTOR,
-            to,
+            msg.sender,
            amount
        ));
        require(
@@ -100,18 +120,27 @@ contract MixinTransfer is
        );
    }

+    /// @dev Decodes ERC721 assetData and transfers given amount to sender.
+    /// @param assetData Byte array encoded for the respective asset proxy.
+    /// @param amount Amount of asset to transfer to sender.
    function transferERC721Token(
        bytes memory assetData,
-        address to
+        uint256 amount
    )
        internal
    {
+        require(
+            amount == 1,
+            "INVALID_AMOUNT"
+        );
        // Decode asset data.
        address token = assetData.readAddress(16);
        uint256 tokenId = assetData.readUint256(36);
+
+        // Perform transfer.
        IERC721Token(token).transferFrom(
            address(this),
-            to,
+            msg.sender,
            tokenId
        );
    }
--- a/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinErrorMessages.sol
@@ -1,35 +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.
-
-*/
-
-// solhint-disable
-pragma solidity 0.4.24;
-
-
-/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons.
-contract MixinErrorMessages {
-    string constant VALUE_GREATER_THAN_ZERO = "VALUE_GREATER_THAN_ZERO";
-    string constant FEE_PROPORTION_TOO_LARGE = "FEE_PROPORTION_TOO_LARGE";
-    string constant TAKER_ASSET_ZRX_REQUIRED = "TAKER_ASSET_ZRX_REQUIRED";
-    string constant TAKER_ASSET_WETH_REQUIRED = "TAKER_ASSET_WETH_REQUIRED";
-    string constant SAME_ASSET_TYPE_REQUIRED = "SAME_ASSET_TYPE_REQUIRED";
-    string constant UNACCEPTABLE_THRESHOLD = "UNACCEPTABLE_THRESHOLD";
-    string constant UNSUPPORTED_TOKEN_PROXY = "UNSUPPORTED_TOKEN_PROXY";
-    string constant ASSET_AMOUNT_MATCH_ORDER_SIZE = "ASSET_AMOUNT_MUST_MATCH_ORDER_SIZE";
-    string constant DEFAULT_FUNCTION_WETH_CONTRACT_ONLY = "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY";
-    string constant INVALID_MSG_VALUE = "INVALID_MSG_VALUE";
-}
--- a/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol
@@ -0,0 +1,253 @@
+/*
+
+  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;
+pragma experimental ABIEncoderV2;
+
+import "./libs/LibConstants.sol";
+import "./mixins/MExchangeWrapper.sol";
+import "../protocol/Exchange/libs/LibAbiEncoder.sol";
+import "../protocol/Exchange/libs/LibOrder.sol";
+import "../protocol/Exchange/libs/LibFillResults.sol";
+import "../protocol/Exchange/libs/LibMath.sol";
+
+
+contract MixinExchangeWrapper is
+    LibAbiEncoder,
+    LibFillResults,
+    LibMath,
+    LibConstants,
+    MExchangeWrapper
+{
+
+    /// @dev Fills the input order.
+    ///      Returns false if the transaction would otherwise revert.
+    /// @param order Order struct containing order specifications.
+    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
+    /// @param signature Proof that order has been created by maker.
+    /// @return Amounts filled and fees paid by maker and taker.
+    function fillOrderNoThrow(
+        LibOrder.Order memory order,
+        uint256 takerAssetFillAmount,
+        bytes memory signature
+    )
+        internal
+        returns (FillResults memory fillResults)
+    {
+        // ABI encode calldata for `fillOrder`
+        bytes memory fillOrderCalldata = abiEncodeFillOrder(
+            order,
+            takerAssetFillAmount,
+            signature
+        );
+
+        address exchange = address(EXCHANGE);
+
+        // Call `fillOrder` and handle any exceptions gracefully
+        assembly {
+            let success := call(
+                gas,                                // forward all gas, TODO: look into gas consumption of assert/throw
+                exchange,                           // call address of Exchange contract
+                0,                                  // transfer 0 wei
+                add(fillOrderCalldata, 32),         // pointer to start of input (skip array length in first 32 bytes)
+                mload(fillOrderCalldata),           // length of input
+                fillOrderCalldata,                  // write output over input
+                128                                 // output size is 128 bytes
+            )
+            switch success
+            case 0 {
+                mstore(fillResults, 0)
+                mstore(add(fillResults, 32), 0)
+                mstore(add(fillResults, 64), 0)
+                mstore(add(fillResults, 96), 0)
+            }
+            case 1 {
+                mstore(fillResults, mload(fillOrderCalldata))
+                mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32)))
+                mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64)))
+                mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96)))
+            }
+        }
+        return fillResults;
+    }
+
+    /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker.
+    ///      Returns false if the transaction would otherwise revert.
+    /// @param orders Array of order specifications.
+    /// @param wethSellAmount Desired amount of WETH to sell.
+    /// @param signatures Proofs that orders have been signed by makers.
+    /// @return Amounts filled and fees paid by makers and taker.
+    function marketSellWeth(
+        LibOrder.Order[] memory orders,
+        uint256 wethSellAmount,
+        bytes[] memory signatures
+    )
+        internal
+        returns (FillResults memory totalFillResults)
+    {
+        bytes memory makerAssetData = orders[0].makerAssetData;
+        bytes memory wethAssetData = WETH_ASSET_DATA;
+
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {
+
+            // We assume that asset being bought by taker is the same for each order.
+            // We assume that asset being sold by taker is WETH for each order.
+            orders[i].makerAssetData = makerAssetData;
+            orders[i].takerAssetData = wethAssetData;
+
+            // Calculate the remaining amount of WETH to sell
+            uint256 remainingTakerAssetFillAmount = safeSub(wethSellAmount, totalFillResults.takerAssetFilledAmount);
+
+            // Attempt to sell the remaining amount of WETH
+            FillResults memory singleFillResults = fillOrderNoThrow(
+                orders[i],
+                remainingTakerAssetFillAmount,
+                signatures[i]
+            );
+
+            // Update amounts filled and fees paid by maker and taker
+            addFillResults(totalFillResults, singleFillResults);
+
+            // Stop execution if the entire amount of takerAsset has been sold
+            if (totalFillResults.takerAssetFilledAmount >= wethSellAmount) {
+                break;
+            }
+        }
+        return totalFillResults;
+    }
+
+    /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker.
+    ///      Returns false if the transaction would otherwise revert.
+    ///      The asset being sold by taker must always be WETH.
+    /// @param orders Array of order specifications.
+    /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
+    /// @param signatures Proofs that orders have been signed by makers.
+    /// @return Amounts filled and fees paid by makers and taker.
+    function marketBuyWithWeth(
+        LibOrder.Order[] memory orders,
+        uint256 makerAssetFillAmount,
+        bytes[] memory signatures
+    )
+        internal
+        returns (FillResults memory totalFillResults)
+    {
+        bytes memory makerAssetData = orders[0].makerAssetData;
+        bytes memory wethAssetData = WETH_ASSET_DATA;
+
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {
+
+            // We assume that asset being bought by taker is the same for each order.
+            // We assume that asset being sold by taker is WETH for each order.
+            orders[i].makerAssetData = makerAssetData;
+            orders[i].takerAssetData = wethAssetData;
+
+            // Calculate the remaining amount of makerAsset to buy
+            uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount);
+
+            // Convert the remaining amount of makerAsset to buy into remaining amount
+            // of takerAsset to sell, assuming entire amount can be sold in the current order
+            uint256 remainingTakerAssetFillAmount = getPartialAmount(
+                orders[i].takerAssetAmount,
+                orders[i].makerAssetAmount,
+                remainingMakerAssetFillAmount
+            );
+
+            // Attempt to sell the remaining amount of takerAsset
+            FillResults memory singleFillResults = fillOrderNoThrow(
+                orders[i],
+                remainingTakerAssetFillAmount,
+                signatures[i]
+            );
+
+            // Update amounts filled and fees paid by maker and taker
+            addFillResults(totalFillResults, singleFillResults);
+
+            // Stop execution if the entire amount of makerAsset has been bought
+            if (totalFillResults.makerAssetFilledAmount >= makerAssetFillAmount) {
+                break;
+            }
+        }
+        return totalFillResults;
+    }
+
+    /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee
+    ///      that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues).
+    ///      It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX
+    ///      as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
+    ///      The asset being sold by taker must always be WETH. 
+    /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset.
+    /// @param zrxBuyAmount Desired amount of ZRX to buy.
+    /// @param signatures Proofs that orders have been created by makers.
+    /// @return totalFillResults Amounts filled and fees paid by maker and taker.
+    function marketBuyZrxWithWeth(
+        LibOrder.Order[] memory orders,
+        uint256 zrxBuyAmount,
+        bytes[] memory signatures
+    )
+        internal
+        returns (FillResults memory totalFillResults)
+    {
+        // Do nothing if zrxBuyAmount == 0
+        if (zrxBuyAmount == 0) {
+            return totalFillResults;
+        }
+
+        bytes memory zrxAssetData = ZRX_ASSET_DATA;
+        bytes memory wethAssetData = WETH_ASSET_DATA;
+        uint256 zrxPurchased = 0;
+
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {
+
+            // All of these are ZRX/WETH, so we can drop the respective assetData from calldata.
+            orders[i].makerAssetData = zrxAssetData;
+            orders[i].takerAssetData = wethAssetData;
+
+            // Calculate the remaining amount of ZRX to buy.
+            uint256 remainingZrxBuyAmount = safeSub(zrxBuyAmount, zrxPurchased);
+
+            // Convert the remaining amount of ZRX to buy into remaining amount
+            // of WETH to sell, assuming entire amount can be sold in the current order.
+            uint256 remainingWethSellAmount = getPartialAmount(
+                orders[i].takerAssetAmount,
+                safeSub(orders[i].makerAssetAmount, orders[i].takerFee),  // our exchange rate after fees 
+                remainingZrxBuyAmount
+            );
+
+            // Attempt to sell the remaining amount of WETH.
+            FillResults memory singleFillResult = fillOrderNoThrow(
+                orders[i],
+                safeAdd(remainingWethSellAmount, 1),  // we add 1 wei to the fill amount to make up for rounding errors
+                signatures[i]
+            );
+
+            // Update amounts filled and fees paid by maker and taker.
+            addFillResults(totalFillResults, singleFillResult);
+            zrxPurchased = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid);
+
+            // Stop execution if the entire amount of ZRX has been bought.
+            if (zrxPurchased >= zrxBuyAmount) {
+                break;
+            }
+        }
+
+        return totalFillResults;
+    }
+}
--- a/packages/contracts/src/2.0.0/forwarder/MixinExpectedResults.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinExpectedResults.sol
@@ -1,161 +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;
-pragma experimental ABIEncoderV2;
-
-import "../utils/LibBytes/LibBytes.sol";
-import "../protocol/Exchange/libs/LibFillResults.sol";
-import "../protocol/Exchange/libs/LibMath.sol";
-import "../protocol/Exchange/libs/LibOrder.sol";
-import "./mixins/MConstants.sol";
-import "./mixins/MExpectedResults.sol";
-
-
-contract MixinExpectedResults is
-    LibMath,
-    LibFillResults,
-    MConstants,
-    MExpectedResults
-{
-
-    /// @dev Calculates a total FillResults for buying makerAssetFillAmount over all orders.
-    ///      Including the fees required to be paid. 
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param makerAssetFillAmount A number representing the amount of this order to fill.
-    /// @return totalFillResults Amounts filled and fees paid by maker and taker.
-    function calculateMarketBuyResults(
-        LibOrder.Order[] memory orders,
-        uint256 makerAssetFillAmount
-    )
-        public
-        view
-        returns (FillResults memory totalFillResults)
-    {
-        for (uint256 i = 0; i < orders.length; i++) {
-            uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount);
-            uint256 remainingTakerAssetFillAmount = getPartialAmount(
-                orders[i].takerAssetAmount,
-                orders[i].makerAssetAmount,
-                remainingMakerAssetFillAmount
-            );
-            FillResults memory singleFillResult = calculateFillResults(orders[i], remainingTakerAssetFillAmount);
-            addFillResults(totalFillResults, singleFillResult);
-            if (totalFillResults.makerAssetFilledAmount == makerAssetFillAmount) {
-                break;
-            }
-        }
-        return totalFillResults;
-    }
-
-    /// @dev Calculates a FillResults total for selling takerAssetFillAmount over all orders. 
-    ///      Including the fees required to be paid. 
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param takerAssetFillAmount A number representing the amount of this order to fill.
-    /// @return totalFillResults Amounts filled and fees paid by maker and taker.
-    function calculateMarketSellResults(
-        LibOrder.Order[] memory orders,
-        uint256 takerAssetFillAmount
-    )
-        public
-        view
-        returns (FillResults memory totalFillResults)
-    {
-        for (uint256 i = 0; i < orders.length; i++) {
-            uint256 remainingTakerAssetFillAmount = safeSub(takerAssetFillAmount, totalFillResults.takerAssetFilledAmount);
-            FillResults memory singleFillResult = calculateFillResults(orders[i], remainingTakerAssetFillAmount);
-            addFillResults(totalFillResults, singleFillResult);
-            if (totalFillResults.takerAssetFilledAmount == takerAssetFillAmount) {
-                break;
-            }
-        }
-        return totalFillResults;
-    }
-
-    /// @dev Calculates fill results for buyFeeTokens. This handles fees on buying ZRX
-    ///      so the end result is the expected amount of ZRX (not less after fees).
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param zrxFillAmount A number representing the amount zrx to buy
-    /// @return totalFillResults Expected fill result amounts from buying fees
-    function calculateMarketBuyZrxResults(
-        LibOrder.Order[] memory orders,
-        uint256 zrxFillAmount
-    )
-        public
-        view
-        returns (FillResults memory totalFillResults)
-    {
-        for (uint256 i = 0; i < orders.length; i++) {
-            uint256 remainingZrxFillAmount = safeSub(zrxFillAmount, totalFillResults.makerAssetFilledAmount);
-            // Convert the remaining amount of makerToken to buy into remaining amount
-            // of takerToken to sell, assuming entire amount can be sold in the current order
-            uint256 remainingWethSellAmount = getPartialAmount(
-                orders[i].takerAssetAmount,
-                safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees 
-                remainingZrxFillAmount
-            );
-            FillResults memory singleFillResult = calculateFillResults(orders[i], safeAdd(remainingWethSellAmount, 1));
-
-            singleFillResult.makerAssetFilledAmount = safeSub(singleFillResult.makerAssetFilledAmount, singleFillResult.takerFeePaid);
-            addFillResults(totalFillResults, singleFillResult);
-            // As we compensate for the rounding issue above have slightly more ZRX than the requested zrxFillAmount
-            if (totalFillResults.makerAssetFilledAmount >= zrxFillAmount) {
-                break;
-            }
-        }
-        return totalFillResults;
-    }
-
-    /// @dev Simulates the 0x Exchange fillOrder validation and calculations, without performing any state changes.
-    /// @param order An Order struct containing order specifications.
-    /// @param takerAssetFillAmount A number representing the amount of this order to fill.
-    /// @return fillResults Amounts filled and fees paid by maker and taker.
-    function calculateFillResults(
-        LibOrder.Order memory order,
-        uint256 takerAssetFillAmount
-    )
-        internal
-        view
-        returns (FillResults memory fillResults)
-    {
-        LibOrder.OrderInfo memory orderInfo = EXCHANGE.getOrderInfo(order);
-        if (orderInfo.orderStatus != uint8(LibOrder.OrderStatus.FILLABLE)) {
-            return fillResults;
-        }
-        uint256 remainingTakerAssetAmount = safeSub(order.takerAssetAmount, orderInfo.orderTakerAssetFilledAmount);
-        uint256 takerAssetFilledAmount = min256(takerAssetFillAmount, remainingTakerAssetAmount);
-
-        fillResults.takerAssetFilledAmount = takerAssetFilledAmount;
-        fillResults.makerAssetFilledAmount = getPartialAmount(
-            takerAssetFilledAmount,
-            order.takerAssetAmount,
-            order.makerAssetAmount
-        );
-        fillResults.makerFeePaid = getPartialAmount(
-            takerAssetFilledAmount,
-            order.takerAssetAmount,
-            order.makerFee
-        );
-        fillResults.takerFeePaid = getPartialAmount(
-            takerAssetFilledAmount,
-            order.takerAssetAmount,
-            order.takerFee
-        );
-        return fillResults;
-    }
-}
--- a/packages/contracts/src/2.0.0/forwarder/MixinFees.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinFees.sol
@@ -1,126 +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/libs/LibMath.sol";
-import "./mixins/MConstants.sol";
-import "./mixins/MFees.sol";
-
-
-contract MixinFees is
-    LibMath,
-    MConstants,
-    MFees
-{
-
-    uint16 constant public PERCENTAGE_DENOMINATOR = 10000; // 9800 == 98%, 10000 == 100%
-    uint16 constant public MAX_FEE = 1000; // 10%
-    uint16 constant public ALLOWABLE_EXCHANGE_PERCENTAGE = 9500; // 95%
-
-    /// @dev Default payabale function, this allows us to withdraw WETH
-    function ()
-        public
-        payable
-    {
-        require(
-            msg.sender == address(ETHER_TOKEN),
-            "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY"
-        );
-    }
-
-    /// @dev Pays the feeRecipient feeProportion of the total takerEthAmount, denominated in ETH
-    /// @param takerEthAmount The total amount that was transacted in WETH, fees are calculated from this value.
-    /// @param feeProportion The proportion of fees
-    /// @param feeRecipient The recipient of the fees
-    /// @return ethFeeAmount Amount of ETH paid to feeRecipient as fee.
-    function payEthFee(
-        uint256 takerEthAmount,
-        uint16 feeProportion,
-        address feeRecipient
-    )
-        internal
-        returns (uint256 ethFeeAmount)
-    {
-        if (feeProportion > 0 && feeRecipient != address(0)) {
-            require(
-                feeProportion <= MAX_FEE,
-                "FEE_PROPORTION_TOO_LARGE"
-            );
-            // 1.5% is 150, allowing for 2 decimal precision, i.e 0.05% is 5
-            ethFeeAmount = getPartialAmount(
-                feeProportion,
-                PERCENTAGE_DENOMINATOR,
-                takerEthAmount
-            );
-            feeRecipient.transfer(ethFeeAmount);
-        }
-        return ethFeeAmount;
-    }
-
-    /// @dev Withdraws the remaining WETH, deduct and pay fees from this amount based on the takerTokenAmount to the feeRecipient.
-    ///      If a user overpaid ETH initially, the fees are calculated from the amount traded and deducted from withdrawAmount.
-    ///      Any remaining ETH is sent back to the user.
-    /// @param ethWithdrawAmount The amount to withdraw from the WETH contract.
-    /// @param wethAmountSold The total amount that was transacted in WETH, fees are calculated from this value.
-    /// @param feeProportion The proportion of fees
-    /// @param feeRecipient The recipient of the fees
-    function withdrawPayAndDeductEthFee(
-        uint256 ethWithdrawAmount,
-        uint256 wethAmountSold,
-        uint16 feeProportion,
-        address feeRecipient
-    )
-        internal
-    {
-        // Return all of the excess WETH if any after deducting fees on the amount
-        if (ethWithdrawAmount > 0) {
-            ETHER_TOKEN.withdraw(ethWithdrawAmount);
-            // Fees proportional to the amount traded
-            uint256 ethFeeAmount = payEthFee(
-                wethAmountSold,
-                feeProportion,
-                feeRecipient
-            );
-            uint256 unspentEthAmount = safeSub(ethWithdrawAmount, ethFeeAmount);
-            if (unspentEthAmount > 0) {
-                msg.sender.transfer(unspentEthAmount);
-            }
-        }
-    }
-
-    /// @dev Checks whether the amount of tokens sold against the amount of tokens requested
-    ///      is within a certain threshold. This ensures the caller gets a fair deal when
-    ///      performing any token fee abstraction. Threshold is 95%. If fee abstraction costs more than
-    ///      5% of the total transaction, we return false.
-    /// @param requestedSellAmount The amount the user requested, or sent in to a payable function
-    /// @param tokenAmountSold The amount of the token that was sold after fee abstraction
-    /// @return bool of whether this is within an acceptable threshold
-    function isAcceptableThreshold(uint256 requestedSellAmount, uint256 tokenAmountSold)
-        internal
-        pure
-        returns (bool)
-    {
-        uint256 acceptableSellAmount = getPartialAmount(
-            ALLOWABLE_EXCHANGE_PERCENTAGE,
-            PERCENTAGE_DENOMINATOR,
-            requestedSellAmount
-        );
-        return tokenAmountSold >= acceptableSellAmount;
-    }
-}
--- a/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol
@@ -19,30 +19,30 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;

-import "../utils/LibBytes/LibBytes.sol";
-import "./mixins/MFees.sol";
-import "./mixins/MMarketBuyZrx.sol";
-import "./mixins/MExpectedResults.sol";
-import "./mixins/MTransfer.sol";
-import "./mixins/MConstants.sol";
+import "./libs/LibConstants.sol";
+import "./mixins/MWeth.sol";
+import "./mixins/MAssets.sol";
+import "./mixins/MExchangeWrapper.sol";
 import "./mixins/MForwarderCore.sol";
+import "../utils/LibBytes/LibBytes.sol";
 import "../protocol/Exchange/libs/LibOrder.sol";
 import "../protocol/Exchange/libs/LibFillResults.sol";
+import "../protocol/Exchange/libs/LibMath.sol";


 contract MixinForwarderCore is
    LibFillResults,
-    MConstants,
-    MExpectedResults,
-    MFees,
-    MMarketBuyZrx,
-    MTransfer,
+    LibMath,
+    LibConstants,
+    MWeth,
+    MAssets,
+    MExchangeWrapper,
    MForwarderCore
 {
-    bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)"));
-    bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)"));
-    uint256 constant internal MAX_UINT = 2**256 - 1;

+    using LibBytes for bytes;
+
+    /// @dev Constructor approves ERC20 proxy to transfer ZRX and WETH on this contract's behalf.
    constructor ()
        public
    {
@@ -53,379 +53,202 @@ contract MixinForwarderCore is
        }
    }

-    /// @dev Market sells ETH for ERC20 tokens, performing fee abstraction if required. This does not support ERC721 tokens. This function is payable
-    ///      and will convert all incoming ETH into WETH and perform the trade on behalf of the caller.
-    ///      This function allows for a deduction of a proportion of incoming ETH sent to the feeRecipient.
-    ///      The caller is sent all tokens from the operation.
-    ///      If the purchased token amount does not meet an acceptable threshold then this function reverts.
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param feeOrders An array of Order struct containing order specifications for fees.
-    /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param feeProportion A proportion deducted off the incoming ETH and sent to feeRecipient. The maximum value for this
-    ///        is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59.
-    /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketSellEthForERC20(
+    /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value.
+    ///      Any ZRX required to pay fees for primary orders will automatically be purchased by this contract.
+    ///      5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH).
+    ///      Any ETH not spent will be refunded to sender.
+    /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. 
+    /// @param signatures Proofs that orders have been created by makers.
+    /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees.
+    /// @param feeSignatures Proofs that feeOrders have been created by makers.
+    /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient.
+    /// @param feeRecipient Address that will receive ETH when orders are filled.
+    /// @return Amounts filled and fees paid by maker and taker for both sets of orders.
+    function marketSellOrdersWithEth(
        LibOrder.Order[] memory orders,
        bytes[] memory signatures,
        LibOrder.Order[] memory feeOrders,
        bytes[] memory feeSignatures,
-        uint16  feeProportion,
+        uint256  feePercentage,
        address feeRecipient
    )
        public
        payable
-        returns (FillResults memory totalFillResults)
+        returns (
+            FillResults memory orderFillResults,
+            FillResults memory feeOrderFillResults
+        )
    {
-        uint256 takerEthAmount = msg.value;
-        require(
-            takerEthAmount > 0,
-            "VALUE_GREATER_THAN_ZERO"
-        );
-        // Deduct the fee from the total amount of ETH sent in
-        uint256 ethFeeAmount = payEthFee(
-            takerEthAmount,
-            feeProportion,
-            feeRecipient
-        );
-        uint256 wethSellAmount = safeSub(takerEthAmount, ethFeeAmount);
+        // Convert ETH to WETH.
+        convertEthToWeth();

-        // Deposit the remaining to be used for trading
-        ETHER_TOKEN.deposit.value(wethSellAmount)();
-        // Populate the known assetData, as it is always WETH the caller can provide null bytes to save gas
-        // marketSellOrders fills the remaining
-        address makerTokenAddress = LibBytes.readAddress(orders[0].makerAssetData, 16);
-        orders[0].takerAssetData = WETH_ASSET_DATA;
-        if (makerTokenAddress == address(ZRX_TOKEN)) {
-            // If this is ZRX then we market sell from the orders, rather than a 2 step of buying ZRX fees from feeOrders
-            // then buying ZRX from orders
-            totalFillResults = marketSellEthForZRXInternal(
+        uint256 wethSellAmount;
+        uint256 zrxBuyAmount;
+        uint256 makerAssetAmountPurchased;
+        if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) {
+            // Calculate amount of WETH that won't be spent on ETH fees.
+            wethSellAmount = getPartialAmount(
+                PERCENTAGE_DENOMINATOR,
+                safeAdd(PERCENTAGE_DENOMINATOR, feePercentage),
+                msg.value
+            );
+            // Market sell available WETH.
+            // ZRX fees are paid with this contract's balance.
+            orderFillResults = marketSellWeth(
                orders,
-                signatures,
-                wethSellAmount
-            );
-        } else {
-            totalFillResults = marketSellEthForERC20Internal(
-                orders,
-                signatures,
-                feeOrders,
-                feeSignatures,
-                wethSellAmount
-            );
-        }
-        // Prevent accidental WETH owned by this contract and it being spent
-        require(
-            takerEthAmount >= totalFillResults.takerAssetFilledAmount,
-            "INVALID_MSG_VALUE"
-        );
-        // Ensure no WETH is left in this contract
-        require(
-            wethSellAmount == totalFillResults.takerAssetFilledAmount,
-            "UNACCEPTABLE_THRESHOLD"
-        );
-        // Transfer all tokens to msg.sender
-        transferERC20Token(
-            makerTokenAddress,
-            msg.sender,
-            totalFillResults.makerAssetFilledAmount
-        );
-        return totalFillResults;
-    }
-
-    /// @dev Buys the exact amount of assets (ERC20 and ERC721), performing fee abstraction if required.
-    ///      All order assets must be of the same type. Deducts a proportional fee to fee recipient.
-    ///      This function is payable and will convert all incoming ETH into WETH and perform the trade on behalf of the caller.
-    ///      The caller is sent all assets from the fill of orders. This function will revert unless the requested amount of assets are purchased.
-    ///      Any excess ETH sent will be returned to the caller
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param feeOrders An array of Order struct containing order specifications for fees.
-    /// @param makerTokenFillAmount The amount of maker asset to buy.
-    /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param feeProportion A proportion deducted off the ETH spent and sent to feeRecipient. The maximum value for this
-    ///        is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59.
-    /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketBuyTokensWithEth(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        LibOrder.Order[] memory feeOrders,
-        bytes[] memory feeSignatures,
-        uint256 makerTokenFillAmount,
-        uint16  feeProportion,
-        address feeRecipient
-    )
-        public
-        payable
-        returns (FillResults memory totalFillResults)
-    {
-        uint256 takerEthAmount = msg.value;
-        require(
-            takerEthAmount > 0,
-            "VALUE_GREATER_THAN_ZERO"
-        );
-        require(
-            makerTokenFillAmount > 0,
-            "VALUE_GREATER_THAN_ZERO"
-        );
-        bytes4 assetDataId = LibBytes.readBytes4(orders[0].makerAssetData, 0);
-        require(
-            assetDataId == ERC20_DATA_ID || assetDataId == ERC721_DATA_ID,
-            "UNSUPPORTED_TOKEN_PROXY"
-        );
-
-        ETHER_TOKEN.deposit.value(takerEthAmount)();
-        if (assetDataId == ERC20_DATA_ID) {
-            totalFillResults = marketBuyERC20TokensInternal(
-                orders,
-                signatures,
-                feeOrders,
-                feeSignatures,
-                makerTokenFillAmount
-            );
-        } else if (assetDataId == ERC721_DATA_ID) {
-            totalFillResults = batchBuyERC721TokensInternal(
-                orders,
-                signatures,
-                feeOrders,
-                feeSignatures
-            );
-        }
-        // Prevent accidental WETH owned by this contract and it being spent
-        require(
-            takerEthAmount >= totalFillResults.takerAssetFilledAmount,
-            "INVALID_MSG_VALUE"
-        );
-        withdrawPayAndDeductEthFee(
-            safeSub(takerEthAmount, totalFillResults.takerAssetFilledAmount),
-            totalFillResults.takerAssetFilledAmount,
-            feeProportion,
-            feeRecipient
-        );
-        return totalFillResults;
-    }
-
-    /// @dev Market sells WETH for ERC20 tokens.
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param feeOrders An array of Order struct containing order specifications for fees.
-    /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param wethSellAmount The amount of WETH to sell.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketSellEthForERC20Internal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        LibOrder.Order[] memory feeOrders,
-        bytes[] memory feeSignatures,
-        uint256 wethSellAmount
-    )
-        internal
-        returns (FillResults memory totalFillResults)
-    {
-        uint256 remainingWethSellAmount = wethSellAmount;
-        FillResults memory calculatedMarketSellResults = calculateMarketSellResults(orders, wethSellAmount);
-        if (calculatedMarketSellResults.takerFeePaid > 0) {
-            // Fees are required for these orders. Buy enough ZRX to cover the future market buy
-            FillResults memory feeTokensResults = marketBuyZrxInternal(
-                feeOrders,
-                feeSignatures,
-                calculatedMarketSellResults.takerFeePaid
-            );
-            // Ensure the token abstraction was fair if fees were proportionally too high, we fail
-            require(
-                isAcceptableThreshold(
-                    wethSellAmount,
-                    safeSub(wethSellAmount, feeTokensResults.takerAssetFilledAmount)
-                ),
-                "UNACCEPTABLE_THRESHOLD"
-            );
-            remainingWethSellAmount = safeSub(remainingWethSellAmount, feeTokensResults.takerAssetFilledAmount);
-            totalFillResults.takerFeePaid = feeTokensResults.takerFeePaid;
-            totalFillResults.takerAssetFilledAmount = feeTokensResults.takerAssetFilledAmount;
-        }
-        // Make our market sell to buy the requested tokens with the remaining balance
-        FillResults memory requestedTokensResults = EXCHANGE.marketSellOrders(
-            orders,
-            remainingWethSellAmount,
-            signatures
-        );
-        // Update our return FillResult with the market sell
-        addFillResults(totalFillResults, requestedTokensResults);
-        return totalFillResults;
-    }
-
-    /// @dev Market sells WETH for ZRX tokens.
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param wethSellAmount The amount of WETH to sell.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketSellEthForZRXInternal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        uint256 wethSellAmount
-    )
-        internal
-        returns (FillResults memory totalFillResults)
-    {
-        // Make our market sell to buy the requested tokens with the remaining balance
-        totalFillResults = EXCHANGE.marketSellOrders(
-            orders,
-            wethSellAmount,
-            signatures
-        );
-        // Exchange does not special case ZRX in the makerAssetFilledAmount, if fees were deducted then using this amount
-        // for future transfers is invalid.
-        uint256 zrxAmountBought = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid);
-        require(
-            isAcceptableThreshold(totalFillResults.makerAssetFilledAmount, zrxAmountBought),
-            "UNACCEPTABLE_THRESHOLD"
-        );
-        totalFillResults.makerAssetFilledAmount = zrxAmountBought;
-        return totalFillResults;
-    }
-
-    /// @dev Buys an exact amount of an ERC20 token using WETH.
-    /// @param orders Orders to fill. The maker asset is the ERC20 token to buy. The taker asset is WETH.
-    /// @param signatures Proof that the orders were created by their respective makers.
-    /// @param feeOrders to fill. The maker asset is ZRX and the taker asset is WETH.
-    /// @param feeSignatures Proof that the feeOrders were created by their respective makers.
-    /// @param makerTokenFillAmount Amount of the ERC20 token to buy.
-    /// @return totalFillResults Aggregated fill results of buying the ERC20 and ZRX tokens.
-    function marketBuyERC20TokensInternal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        LibOrder.Order[] memory feeOrders,
-        bytes[] memory feeSignatures,
-        uint256 makerTokenFillAmount
-    )
-        internal
-        returns (LibFillResults.FillResults memory totalFillResults)
-    {
-        // We read the maker token address to check if it is ZRX and later use it for transfer
-        address makerTokenAddress = LibBytes.readAddress(orders[0].makerAssetData, 16);
-        // We assume that asset being bought by taker is the same for each order.
-        // Rather than passing this in as calldata, we copy the makerAssetData from the first order onto all later orders.
-        orders[0].takerAssetData = WETH_ASSET_DATA;
-        // We can short cut here for effeciency and use buyFeeTokensInternal if maker asset token is ZRX
-        // this buys us exactly that amount taking into account the fees. This saves gas and calculates the rate correctly
-        FillResults memory marketBuyResults;
-        if (makerTokenAddress == address(ZRX_TOKEN)) {
-            marketBuyResults = marketBuyZrxInternal(
-                orders,
-                signatures,
-                makerTokenFillAmount
-            );
-            // When buying ZRX we round up which can result in a small margin excess
-            require(
-                marketBuyResults.makerAssetFilledAmount >= makerTokenFillAmount,
-                "UNACCEPTABLE_THRESHOLD"
-            );
-            addFillResults(totalFillResults, marketBuyResults);
-            require(
-                isAcceptableThreshold(
-                    safeAdd(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid), // Total ZRX
-                    totalFillResults.makerAssetFilledAmount // amount going to msg.sender
-                ),
-                "UNACCEPTABLE_THRESHOLD"
-            );
-        } else {
-            FillResults memory calculatedMarketBuyResults = calculateMarketBuyResults(orders, makerTokenFillAmount);
-            if (calculatedMarketBuyResults.takerFeePaid > 0) {
-                // Fees are required for these orders. Buy enough ZRX to cover the future market buy
-                FillResults memory zrxMarketBuyResults = marketBuyZrxInternal(
-                    feeOrders,
-                    feeSignatures,
-                    calculatedMarketBuyResults.takerFeePaid
-                );
-                totalFillResults.takerAssetFilledAmount = zrxMarketBuyResults.takerAssetFilledAmount;
-                totalFillResults.takerFeePaid = zrxMarketBuyResults.takerFeePaid;
-            }
-            // Make our market buy of the requested tokens with the remaining balance
-            marketBuyResults = EXCHANGE.marketBuyOrders(
-                orders,
-                makerTokenFillAmount,
+                wethSellAmount,
                signatures
            );
-            require(
-                marketBuyResults.makerAssetFilledAmount == makerTokenFillAmount,
-                "UNACCEPTABLE_THRESHOLD"
+            // The fee amount must be deducted from the amount transfered back to sender.
+            makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid);
+        } else {
+            // 5% of WETH is reserved for filling feeOrders and paying feeRecipient.
+            wethSellAmount = getPartialAmount(
+                MAX_WETH_FILL_PERCENTAGE,
+                PERCENTAGE_DENOMINATOR,
+                msg.value
            );
-            addFillResults(totalFillResults, marketBuyResults);
-            require(
-                isAcceptableThreshold(
-                    totalFillResults.takerAssetFilledAmount,
-                    marketBuyResults.takerAssetFilledAmount
-                ),
-                "UNACCEPTABLE_THRESHOLD"
+            // Market sell 95% of WETH.
+            // ZRX fees are payed with this contract's balance.
+            orderFillResults = marketSellWeth(
+                orders,
+                wethSellAmount,
+                signatures
            );
+            // Buy back all ZRX spent on fees.
+            zrxBuyAmount = orderFillResults.takerFeePaid;
+            feeOrderFillResults = marketBuyZrxWithWeth(
+                feeOrders,
+                zrxBuyAmount,
+                feeSignatures
+            );
+            makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount;
        }
-        // Transfer all purchased tokens to msg.sender
-        transferERC20Token(
-            makerTokenAddress,
-            msg.sender,
-            marketBuyResults.makerAssetFilledAmount
+
+        // Ensure that all ZRX fees have been repurchased and no extra WETH owned by this contract has been sold.
+        assertValidFillResults(
+            orderFillResults,
+            feeOrderFillResults,
+            zrxBuyAmount
        );
-        return totalFillResults;
+
+        // Transfer feePercentage of total ETH spent on primary orders to feeRecipient.
+        // Refund remaining ETH to msg.sender.
+        transferEthFeeAndRefund(
+            orderFillResults.takerAssetFilledAmount,
+            feeOrderFillResults.takerAssetFilledAmount,
+            feePercentage,
+            feeRecipient
+        );
+
+        // Transfer purchased assets to msg.sender.
+        transferPurchasedAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased);
    }

-    /// @dev Buys an all of the ERC721 tokens in the orders.
-    /// @param orders Orders to fill. The maker asset is the ERC721 token to buy. The taker asset is WETH.
-    /// @param signatures Proof that the orders were created by their respective makers.
-    /// @param feeOrders to fill. The maker asset is ZRX and the taker asset is WETH.
-    /// @param feeSignatures Proof that the feeOrders were created by their respective makers.
-    /// @return totalFillResults Aggregated fill results of buying the ERC721 tokens and ZRX tokens.
-    function batchBuyERC721TokensInternal(
+    /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction.
+    ///      Any ZRX required to pay fees for primary orders will automatically be purchased by this contract.
+    ///      Any ETH not spent will be refunded to sender.
+    /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. 
+    /// @param makerAssetFillAmount Desired amount of makerAsset to purchase.
+    /// @param signatures Proofs that orders have been created by makers.
+    /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees.
+    /// @param feeSignatures Proofs that feeOrders have been created by makers.
+    /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient.
+    /// @param feeRecipient Address that will receive ETH when orders are filled.
+    /// @return Amounts filled and fees paid by maker and taker for both sets of orders.
+    function marketBuyOrdersWithEth(
        LibOrder.Order[] memory orders,
+        uint256 makerAssetFillAmount,
        bytes[] memory signatures,
        LibOrder.Order[] memory feeOrders,
-        bytes[] memory feeSignatures
+        bytes[] memory feeSignatures,
+        uint256  feePercentage,
+        address feeRecipient
+    )
+        public
+        payable
+        returns (
+            FillResults memory orderFillResults,
+            FillResults memory feeOrderFillResults
+        )
+    {
+        // Convert ETH to WETH.
+        convertEthToWeth();
+
+        uint256 zrxBuyAmount;
+        uint256 makerAssetAmountPurchased;
+        if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) {
+            // If the makerAsset is ZRX, it is not necessary to pay fees out of this
+            // contracts's ZRX balance because fees are factored into the price of the order.
+            orderFillResults = marketBuyZrxWithWeth(
+                orders,
+                makerAssetFillAmount,
+                signatures
+            );
+            // The fee amount must be deducted from the amount transfered back to sender.
+            makerAssetAmountPurchased = safeSub(orderFillResults.makerAssetFilledAmount, orderFillResults.takerFeePaid);
+        } else {
+            // Attemp to purchase desired amount of makerAsset.
+            // ZRX fees are payed with this contract's balance.
+            orderFillResults = marketBuyWithWeth(
+                orders,
+                makerAssetFillAmount,
+                signatures
+            );
+            // Buy back all ZRX spent on fees.
+            zrxBuyAmount = orderFillResults.takerFeePaid;
+            feeOrderFillResults = marketBuyZrxWithWeth(
+                feeOrders,
+                zrxBuyAmount,
+                feeSignatures
+            );
+            makerAssetAmountPurchased = orderFillResults.makerAssetFilledAmount;
+        }
+
+        // Ensure that all ZRX fees have been repurchased and no extra WETH owned by this contract has been sold.
+        assertValidFillResults(
+            orderFillResults,
+            feeOrderFillResults,
+            zrxBuyAmount
+        );
+
+        // Transfer feePercentage of total ETH spent on primary orders to feeRecipient.
+        // Refund remaining ETH to msg.sender.
+        transferEthFeeAndRefund(
+            orderFillResults.takerAssetFilledAmount,
+            feeOrderFillResults.takerAssetFilledAmount,
+            feePercentage,
+            feeRecipient
+        );
+
+        // Transfer purchased assets to msg.sender.
+        transferPurchasedAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased);
+    }
+
+    /// @dev Ensures that all ZRX fees have been repurchased and no extra WETH owned by this contract has been sold.
+    /// @param orderFillResults Amounts filled and fees paid for primary orders.
+    /// @param feeOrderFillResults Amounts filled and fees paid for fee orders.
+    /// @param zrxBuyAmount The amount of ZRX that needed to be repurchased after filling primary orders.
+    function assertValidFillResults(
+        FillResults memory orderFillResults,
+        FillResults memory feeOrderFillResults,
+        uint256 zrxBuyAmount
    )
        internal
-        returns (LibFillResults.FillResults memory totalFillResults)
+        view
    {
-        uint256 totalZrxFeeAmount;
-        uint256 ordersLength = orders.length;
-        uint256[] memory takerAssetFillAmounts = new uint256[](ordersLength);
-        for (uint256 i = 0; i < ordersLength; i++) {
-            // Total up the fees
-            totalZrxFeeAmount = safeAdd(totalZrxFeeAmount, orders[i].takerFee);
-            // We assume that asset being bought by taker is the same for each order.
-            // Rather than passing this in as calldata, we set the takerAssetData as WETH asset data
-            orders[i].takerAssetData = WETH_ASSET_DATA;
-            // Populate takerAssetFillAmounts for later batchFill
-            takerAssetFillAmounts[i] = orders[i].takerAssetAmount;
-        }
-        if (totalZrxFeeAmount > 0) {
-            // Fees are required for these orders. Buy enough ZRX to cover the future fill
-            FillResults memory zrxMarketBuyResults = marketBuyZrxInternal(
-                feeOrders,
-                feeSignatures,
-                totalZrxFeeAmount
-            );
-            totalFillResults.takerFeePaid = zrxMarketBuyResults.takerFeePaid;
-            totalFillResults.takerAssetFilledAmount = zrxMarketBuyResults.takerAssetFilledAmount;
-        }
-        FillResults memory batchFillResults = EXCHANGE.batchFillOrKillOrders(
-            orders,
-            takerAssetFillAmounts,
-            signatures
-        );
-        addFillResults(totalFillResults, batchFillResults);
+        // Ensure that all ZRX spent while filling primary orders has been repurchased.
+        uint256 zrxPurchased = safeSub(feeOrderFillResults.makerAssetFilledAmount, feeOrderFillResults.takerFeePaid);
        require(
-            isAcceptableThreshold(
-                totalFillResults.takerAssetFilledAmount,
-                batchFillResults.takerAssetFilledAmount
-            ),
-            "UNACCEPTABLE_THRESHOLD"
+            zrxPurchased >= zrxBuyAmount,
+            "COMPLETE_FILL_FAILED"
+        );
+
+        // Ensure that no extra WETH owned by this contract has been sold.
+        uint256 wethSold = safeAdd(orderFillResults.takerAssetFilledAmount, feeOrderFillResults.takerAssetFilledAmount);
+        require(
+            wethSold <= msg.value,
+            "OVERSOLD_WETH"
        );
-        // Transfer all of the tokens filled from the batchFill
-        for (i = 0; i < ordersLength; i++) {
-            transferERC721Token(
-                orders[i].makerAssetData,
-                msg.sender
-            );
-        }
-        return totalFillResults;
    }
 }
--- a/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyZrx.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinMarketBuyZrx.sol
@@ -1,83 +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;
-pragma experimental ABIEncoderV2;
-
-import "../protocol/Exchange/libs/LibFillResults.sol";
-import "../protocol/Exchange/libs/LibOrder.sol";
-import "../protocol/Exchange/libs/LibMath.sol";
-import "./mixins/MConstants.sol";
-import "./mixins/MMarketBuyZrx.sol";
-
-
-contract MixinMarketBuyZrx is
-    LibMath,
-    LibFillResults,
-    MConstants,
-    MMarketBuyZrx
-{
-
-    /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account the fees on buying fee tokens. This will guarantee
-    ///      At least zrxBuyAmount of ZRX fee tokens are purchased (sometimes slightly over due to rounding issues).
-    ///      It is possible that a request to buy 200 ZRX fee tokens will require purchasing 202 ZRX tokens
-    ///      As 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
-    /// @param orders An array of Order struct containing order specifications for fees.
-    /// @param signatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param zrxBuyAmount The number of requested ZRX fee tokens.
-    /// @return totalFillResults Amounts filled and fees paid by maker and taker. makerTokenAmount is the zrx amount deducted of fees
-    function marketBuyZrxInternal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        uint256 zrxBuyAmount
-    )
-        internal
-        returns (FillResults memory totalFillResults)
-    {
-        for (uint256 i = 0; i < orders.length; i++) {
-            // All of these are ZRX/WETH, we can drop the respective assetData from callData
-            orders[i].makerAssetData = ZRX_ASSET_DATA;
-            orders[i].takerAssetData = WETH_ASSET_DATA;
-            // Calculate the remaining amount of makerToken to buy
-            uint256 remainingZrxBuyAmount = safeSub(zrxBuyAmount, totalFillResults.makerAssetFilledAmount);
-            // Convert the remaining amount of makerToken to buy into remaining amount
-            // of takerToken to sell, assuming entire amount can be sold in the current order
-            uint256 remainingWethSellAmount = getPartialAmount(
-                orders[i].takerAssetAmount,
-                safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees 
-                remainingZrxBuyAmount
-            );
-            // Attempt to sell the remaining amount of takerToken
-            // Round up the amount to ensure we don't under buy by a fractional amount
-            FillResults memory singleFillResult = EXCHANGE.fillOrder(
-                orders[i],
-                safeAdd(remainingWethSellAmount, 1),
-                signatures[i]
-            );
-            // We didn't buy the full amount when buying ZRX as some were taken for fees
-            singleFillResult.makerAssetFilledAmount = safeSub(singleFillResult.makerAssetFilledAmount, singleFillResult.takerFeePaid);
-            // Update amounts filled and fees paid by maker and taker
-            addFillResults(totalFillResults, singleFillResult);
-            // Stop execution if the entire amount of makerToken has been bought
-            if (totalFillResults.makerAssetFilledAmount >= zrxBuyAmount) {
-                break;
-            }
-        }
-        return totalFillResults;
-    }
-}
--- a/packages/contracts/src/2.0.0/forwarder/MixinWeth.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinWeth.sol
@@ -0,0 +1,110 @@
+/*
+
+  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/libs/LibMath.sol";
+import "./libs/LibConstants.sol";
+import "./mixins/MWeth.sol";
+
+
+contract MixinWeth is
+    LibMath,
+    LibConstants,
+    MWeth
+{
+
+    /// @dev Default payabale function, this allows us to withdraw WETH
+    function ()
+        public
+        payable
+    {
+        require(
+            msg.sender == address(ETHER_TOKEN),
+            "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY"
+        );
+    }
+
+    /// @dev Converts message call's ETH value into WETH.
+    function convertEthToWeth()
+        internal
+    {
+        require(
+            msg.value > 0,
+            "INVALID_MSG_VALUE"
+        );
+        ETHER_TOKEN.deposit.value(msg.value)();
+    }
+
+    /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient.
+    ///      Refunds any excess ETH to msg.sender.
+    /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders.
+    /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees.
+    /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient.
+    /// @param feeRecipient Address that will receive ETH when orders are filled.
+    function transferEthFeeAndRefund(
+        uint256 wethSoldExcludingFeeOrders,
+        uint256 wethSoldForZrx,
+        uint256 feePercentage,
+        address feeRecipient
+    )
+        internal
+    {
+        // Ensure feePercentage is less than 5%.
+        require(
+            feePercentage <= MAX_FEE_PERCENTAGE,
+            "FEE_PERCENTAGE_TOO_LARGE"
+        );
+
+        // Calculate amount of WETH that hasn't been sold.
+        uint256 wethRemaining = safeSub(
+            msg.value,
+            safeAdd(wethSoldExcludingFeeOrders, wethSoldForZrx)
+        );
+
+        // Calculate ETH fee to pay to feeRecipient.
+        uint256 ethFee = getPartialAmount(
+            feePercentage,
+            PERCENTAGE_DENOMINATOR,
+            wethSoldExcludingFeeOrders
+        );
+
+        // Ensure fee is less than amount of WETH remaining.
+        require(
+            ethFee <= wethRemaining,
+            "INSUFFICIENT_ETH_REMAINING"
+        );
+    
+        // Do nothing if no WETH remaining
+        if (wethRemaining > 0) {
+            // Convert remaining WETH to ETH
+            ETHER_TOKEN.withdraw(wethRemaining);
+
+            // Pay ETH to feeRecipient
+            if (ethFee > 0) {
+                feeRecipient.transfer(ethFee);
+            }
+
+            // Refund remaining ETH to msg.sender.
+            uint256 ethRefund = safeSub(wethRemaining, ethFee);
+            if (ethRefund > 0) {
+                msg.sender.transfer(ethRefund);
+            }
+        }
+    }
+}
--- a/packages/contracts/src/2.0.0/forwarder/interfaces/IAssets.sol
+++ b/packages/contracts/src/2.0.0/forwarder/interfaces/IAssets.sol
@@ -19,28 +19,16 @@
 pragma solidity 0.4.24;


-contract MTransfer {
+contract IAssets {

-    function onERC721Received(address, uint256, bytes memory)
-        public
-        pure
-        returns(bytes4);
-
-    function onERC721Received(address, address, uint256, bytes memory)
-        public
-        pure
-        returns(bytes4);
-    
-    function transferERC20Token(
+    /// @dev Withdraws ERC20 tokens from this contract. The contract requires a ZRX balance in order to 
+    ///      function optimally, and this function allows the ZRX to be withdrawn by owner. It may also be
+    ///      used to withdraw tokens that were accidentally sent to this contract.
+    /// @param token Address of ERC20 token to withdraw.
+    /// @param amount Amount of ERC20 token to withdraw.
+    function withdrawERC20(
        address token,
-        address to,
        uint256 amount
    )
-        internal;
-
-    function transferERC721Token(
-        bytes memory assetData,
-        address to
-    )
-        internal;
+        external;
 }
--- a/packages/contracts/src/2.0.0/forwarder/interfaces/IExpectedResults.sol
+++ b/packages/contracts/src/2.0.0/forwarder/interfaces/IExpectedResults.sol
@@ -1,66 +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;
-pragma experimental ABIEncoderV2;
-
-import "../../protocol/Exchange/libs/LibFillResults.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
-
-
-contract IExpectedResults {
-
-    /// @dev Calculates a total FillResults for buying makerAssetFillAmount over all orders.
-    ///      Including the fees required to be paid. 
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param makerAssetFillAmount A number representing the amount of this order to fill.
-    /// @return totalFillResults Amounts filled and fees paid by maker and taker.
-    function calculateMarketBuyResults(
-        LibOrder.Order[] memory orders,
-        uint256 makerAssetFillAmount
-    )
-        public
-        view
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Calculates a FillResults total for selling takerAssetFillAmount over all orders. 
-    ///      Including the fees required to be paid. 
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param takerAssetFillAmount A number representing the amount of this order to fill.
-    /// @return totalFillResults Amounts filled and fees paid by maker and taker.
-    function calculateMarketSellResults(
-        LibOrder.Order[] memory orders,
-        uint256 takerAssetFillAmount
-    )
-        public
-        view
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Calculates fill results for buyFeeTokens. This handles fees on buying ZRX
-    ///      so the end result is the expected amount of ZRX (not less after fees).
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param zrxFillAmount A number representing the amount zrx to buy
-    /// @return totalFillResults Expected fill result amounts from buying fees
-    function calculateMarketBuyZrxResults(
-        LibOrder.Order[] memory orders,
-        uint256 zrxFillAmount
-    )
-        public
-        view
-        returns (LibFillResults.FillResults memory totalFillResults);
-}
--- a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol
+++ b/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarder.sol
@@ -20,11 +20,11 @@ pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;

 import "./IForwarderCore.sol";
-import "./IExpectedResults.sol";
+import "./IAssets.sol";


 // solhint-disable no-empty-blocks
 contract IForwarder is
    IForwarderCore,
-    IExpectedResults
+    IAssets
 {}
--- a/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol
+++ b/packages/contracts/src/2.0.0/forwarder/interfaces/IForwarderCore.sol
@@ -25,55 +25,56 @@ import "../../protocol/Exchange/libs/LibFillResults.sol";

 contract IForwarderCore {

-    /// @dev Market sells ETH for ERC20 tokens, performing fee abstraction if required. This does not support ERC721 tokens. This function is payable
-    ///      and will convert all incoming ETH into WETH and perform the trade on behalf of the caller.
-    ///      This function allows for a deduction of a proportion of incoming ETH sent to the feeRecipient.
-    ///      The caller is sent all tokens from the operation.
-    ///      If the purchased token amount does not meet an acceptable threshold then this function reverts.
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param feeOrders An array of Order struct containing order specifications for fees.
-    /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param feeProportion A proportion deducted off the incoming ETH and sent to feeRecipient. The maximum value for this
-    ///        is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59.
-    /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketSellEthForERC20(
+    /// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value.
+    ///      Any ZRX required to pay fees for primary orders will automatically be purchased by this contract.
+    ///      5% of ETH value is reserved for paying fees to order feeRecipients (in ZRX) and forwarding contract feeRecipient (in ETH).
+    ///      Any ETH not spent will be refunded to sender.
+    /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. 
+    /// @param signatures Proofs that orders have been created by makers.
+    /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees.
+    /// @param feeSignatures Proofs that feeOrders have been created by makers.
+    /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient.
+    /// @param feeRecipient Address that will receive ETH when orders are filled.
+    /// @return Amounts filled and fees paid by maker and taker for both sets of orders.
+    function marketSellOrdersWithEth(
        LibOrder.Order[] memory orders,
        bytes[] memory signatures,
        LibOrder.Order[] memory feeOrders,
        bytes[] memory feeSignatures,
-        uint16  feeProportion,
+        uint256  feePercentage,
        address feeRecipient
    )
        public
        payable
-        returns (LibFillResults.FillResults memory totalFillResults);
+        returns (
+            LibFillResults.FillResults memory orderFillResults,
+            LibFillResults.FillResults memory feeOrderFillResults
+        );

-    /// @dev Buys the exact amount of assets (ERC20 and ERC721), performing fee abstraction if required.
-    ///      All order assets must be of the same type. Deducts a proportional fee to fee recipient.
-    ///      This function is payable and will convert all incoming ETH into WETH and perform the trade on behalf of the caller.
-    ///      The caller is sent all assets from the fill of orders. This function will revert unless the requested amount of assets are purchased.
-    ///      Any excess ETH sent will be returned to the caller
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param feeOrders An array of Order struct containing order specifications for fees.
-    /// @param makerTokenFillAmount The amount of maker asset to buy.
-    /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param feeProportion A proportion deducted off the ETH spent and sent to feeRecipient. The maximum value for this
-    ///        is 1000, aka 10%. Supports up to 2 decimal places. I.e 0.59% is 59.
-    /// @param feeRecipient An address of the fee recipient whom receives feeProportion of ETH.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketBuyTokensWithEth(
+    /// @dev Attempt to purchase makerAssetFillAmount of makerAsset by selling ETH provided with transaction.
+    ///      Any ZRX required to pay fees for primary orders will automatically be purchased by this contract.
+    ///      Any ETH not spent will be refunded to sender.
+    /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset. 
+    /// @param makerAssetFillAmount Desired amount of makerAsset to purchase.
+    /// @param signatures Proofs that orders have been created by makers.
+    /// @param feeOrders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset. Used to purchase ZRX for primary order fees.
+    /// @param feeSignatures Proofs that feeOrders have been created by makers.
+    /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient.
+    /// @param feeRecipient Address that will receive ETH when orders are filled.
+    /// @return Amounts filled and fees paid by maker and taker for both sets of orders.
+    function marketBuyOrdersWithEth(
        LibOrder.Order[] memory orders,
+        uint256 makerAssetFillAmount,
        bytes[] memory signatures,
        LibOrder.Order[] memory feeOrders,
        bytes[] memory feeSignatures,
-        uint256 makerTokenFillAmount,
-        uint16  feeProportion,
+        uint256  feePercentage,
        address feeRecipient
    )
        public
        payable
-        returns (LibFillResults.FillResults memory totalFillResults);
+        returns (
+            LibFillResults.FillResults memory orderFillResults,
+            LibFillResults.FillResults memory feeOrderFillResults
+        );
 }
--- a/packages/contracts/src/2.0.0/forwarder/libs/LibConstants.sol
+++ b/packages/contracts/src/2.0.0/forwarder/libs/LibConstants.sol
@@ -18,12 +18,27 @@

 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
-    MConstants
-{
+contract LibConstants {
+
+    bytes4 constant internal ERC20_DATA_ID = bytes4(keccak256("ERC20Token(address)"));
+    bytes4 constant internal ERC721_DATA_ID = bytes4(keccak256("ERC721Token(address,uint256)"));
+    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

    constructor (
        address _exchange,
--- a/packages/contracts/src/2.0.0/forwarder/libs/LibForwarderErrors.sol
+++ b/packages/contracts/src/2.0.0/forwarder/libs/LibForwarderErrors.sol
@@ -0,0 +1,34 @@
+/*
+
+  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.
+
+*/
+
+// solhint-disable
+pragma solidity 0.4.24;
+
+
+/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons.
+contract LibForwarderErrors {
+    string constant FEE_PERCENTAGE_TOO_LARGE = "FEE_PROPORTION_TOO_LARGE";                        // Provided fee percentage greater than 5%.
+    string constant INSUFFICIENT_ETH_REMAINING = "INSUFFICIENT_ETH_REMAINING";                    // Not enough ETH remaining to pay feeRecipient.
+    string constant OVERSOLD_WETH = "OVERSOLD_WETH";                                              // More WETH sold than provided with current message call.
+    string constant COMPLETE_FILL_FAILED = "COMPLETE_FILL_FAILED";                                // Desired purchase amount not completely filled (required for ZRX fees only).
+    string constant TRANSFER_FAILED = "TRANSFER_FAILED";                                          // Asset transfer failed.
+    string constant UNSUPPORTED_TOKEN_PROXY = "UNSUPPORTED_TOKEN_PROXY";                          // Proxy in assetData not supported.
+    string constant DEFAULT_FUNCTION_WETH_CONTRACT_ONLY = "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY";  // Fallback function may only be used for WETH withdrawals.
+    string constant INVALID_MSG_VALUE = "INVALID_MSG_VALUE";                                      // msg.value must be greater than 0.
+    string constant INVALID_AMOUNT = "INVALID_AMOUNT";                                            // Amount must equal 1.
+}
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MAssets.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MAssets.sol
@@ -0,0 +1,54 @@
+/*
+
+  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 "../interfaces/IAssets.sol";
+
+
+contract MAssets is
+    IAssets
+{
+
+    /// @dev Transfers given amount of asset to sender.
+    /// @param assetData Byte array encoded for the respective asset proxy.
+    /// @param amount Amount of asset to transfer to sender.
+    function transferPurchasedAssetToSender(
+        bytes memory assetData,
+        uint256 amount
+    )
+        internal;
+
+    /// @dev Decodes ERC20 assetData and transfers given amount to sender.
+    /// @param assetData Byte array encoded for the respective asset proxy.
+    /// @param amount Amount of asset to transfer to sender.
+    function transferERC20Token(
+        bytes memory assetData,
+        uint256 amount
+    )
+        internal;
+
+    /// @dev Decodes ERC721 assetData and transfers given amount to sender.
+    /// @param assetData Byte array encoded for the respective asset proxy.
+    /// @param amount Amount of asset to transfer to sender.
+    function transferERC721Token(
+        bytes memory assetData,
+        uint256 amount
+    )
+        internal;
+}
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MConstants.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MConstants.sol
@@ -1,35 +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 {
-
-    // 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
-}
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol
@@ -0,0 +1,87 @@
+/*
+
+  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;
+pragma experimental ABIEncoderV2;
+
+import "../../protocol/Exchange/libs/LibOrder.sol";
+import "../../protocol/Exchange/libs/LibFillResults.sol";
+
+
+contract MExchangeWrapper {
+
+    /// @dev Fills the input order.
+    ///      Returns false if the transaction would otherwise revert.
+    /// @param order Order struct containing order specifications.
+    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
+    /// @param signature Proof that order has been created by maker.
+    /// @return Amounts filled and fees paid by maker and taker.
+    function fillOrderNoThrow(
+        LibOrder.Order memory order,
+        uint256 takerAssetFillAmount,
+        bytes memory signature
+    )
+        internal
+        returns (LibFillResults.FillResults memory fillResults);
+
+    /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker.
+    ///      Returns false if the transaction would otherwise revert.
+    /// @param orders Array of order specifications.
+    /// @param wethSellAmount Desired amount of WETH to sell.
+    /// @param signatures Proofs that orders have been signed by makers.
+    /// @return Amounts filled and fees paid by makers and taker.
+    function marketSellWeth(
+        LibOrder.Order[] memory orders,
+        uint256 wethSellAmount,
+        bytes[] memory signatures
+    )
+        internal
+        returns (LibFillResults.FillResults memory totalFillResults);
+
+    /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker.
+    ///      Returns false if the transaction would otherwise revert.
+    ///      The asset being sold by taker must always be WETH.
+    /// @param orders Array of order specifications.
+    /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
+    /// @param signatures Proofs that orders have been signed by makers.
+    /// @return Amounts filled and fees paid by makers and taker.
+    function marketBuyWithWeth(
+        LibOrder.Order[] memory orders,
+        uint256 makerAssetFillAmount,
+        bytes[] memory signatures
+    )
+        internal
+        returns (LibFillResults.FillResults memory totalFillResults);
+
+    /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee
+    ///      that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues).
+    ///      It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX
+    ///      as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
+    ///      The asset being sold by taker must always be WETH. 
+    /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset.
+    /// @param zrxBuyAmount Desired amount of ZRX to buy.
+    /// @param signatures Proofs that orders have been created by makers.
+    /// @return totalFillResults Amounts filled and fees paid by maker and taker.
+    function marketBuyZrxWithWeth(
+        LibOrder.Order[] memory orders,
+        uint256 zrxBuyAmount,
+        bytes[] memory signatures
+    )
+        internal
+        returns (LibFillResults.FillResults memory totalFillResults);
+}
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MExpectedResults.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MExpectedResults.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;
-pragma experimental ABIEncoderV2;
-
-import "../../protocol/Exchange/libs/LibFillResults.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
-import "../interfaces/IExpectedResults.sol";
-
-
-contract MExpectedResults is
-    IExpectedResults
-{
-
-    /// @dev Simulates the 0x Exchange fillOrder validation and calculations, without performing any state changes.
-    /// @param order An Order struct containing order specifications.
-    /// @param takerAssetFillAmount A number representing the amount of this order to fill.
-    /// @return fillResults Amounts filled and fees paid by maker and taker.
-    function calculateFillResults(
-        LibOrder.Order memory order,
-        uint256 takerAssetFillAmount
-    )
-        internal
-        view
-        returns (LibFillResults.FillResults memory fillResults);
-}
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MFees.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MFees.sol
@@ -1,63 +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;
-
-
-contract MFees {
-
-    /// @dev Pays the feeRecipient feeProportion of the total takerEthAmount, denominated in ETH
-    /// @param takerEthAmount The total amount that was transacted in WETH, fees are calculated from this value.
-    /// @param feeProportion The proportion of fees
-    /// @param feeRecipient The recipient of the fees
-    /// @return ethFeeAmount Amount of ETH paid to feeRecipient as fee.
-    function payEthFee(
-        uint256 takerEthAmount,
-        uint16 feeProportion,
-        address feeRecipient
-    )
-        internal
-        returns (uint256 ethFeeAmount);
-
-    /// @dev Withdraws the remaining WETH, deduct and pay fees from this amount based on the takerTokenAmount to the feeRecipient.
-    ///      If a user overpaid ETH initially, the fees are calculated from the amount traded and deducted from withdrawAmount.
-    ///      Any remaining ETH is sent back to the user.
-    /// @param ethWithdrawAmount The amount to withdraw from the WETH contract.
-    /// @param wethAmountSold The total amount that was transacted in WETH, fees are calculated from this value.
-    /// @param feeProportion The proportion of fees
-    /// @param feeRecipient The recipient of the fees
-    function withdrawPayAndDeductEthFee(
-        uint256 ethWithdrawAmount,
-        uint256 wethAmountSold,
-        uint16 feeProportion,
-        address feeRecipient
-    )
-        internal;
-
-    /// @dev Checks whether the amount of tokens sold against the amount of tokens requested
-    ///      is within a certain threshold. This ensures the caller gets a fair deal when
-    ///      performing any token fee abstraction. Threshold is 95%. If fee abstraction costs more than
-    ///      5% of the total transaction, we return false.
-    /// @param requestedSellAmount The amount the user requested, or sent in to a payable function
-    /// @param tokenAmountSold The amount of the token that was sold after fee abstraction
-    /// @return bool of whether this is within an acceptable threshold
-    function isAcceptableThreshold(uint256 requestedSellAmount, uint256 tokenAmountSold)
-        internal
-        pure
-        returns (bool);
-}
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol
@@ -28,65 +28,15 @@ contract MForwarderCore is
    IForwarderCore
 {

-    /// @dev Market sells WETH for ERC20 tokens.
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param feeOrders An array of Order struct containing order specifications for fees.
-    /// @param feeSignatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param wethSellAmount The amount of WETH to sell.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketSellEthForERC20Internal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        LibOrder.Order[] memory feeOrders,
-        bytes[] memory feeSignatures,
-        uint256 wethSellAmount
+    /// @dev Ensures that all ZRX fees have been repurchased and no extra WETH owned by this contract has been sold.
+    /// @param orderFillResults Amounts filled and fees paid for primary orders.
+    /// @param feeOrderFillResults Amounts filled and fees paid for fee orders.
+    /// @param zrxBuyAmount The amount of ZRX that needed to be repurchased after filling primary orders.
+    function assertValidFillResults(
+        LibFillResults.FillResults memory orderFillResults,
+        LibFillResults.FillResults memory feeOrderFillResults,
+        uint256 zrxBuyAmount
    )
        internal
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Market sells WETH for ZRX tokens.
-    /// @param orders An array of Order struct containing order specifications.
-    /// @param signatures An array of Proof that order has been created by maker.
-    /// @param wethSellAmount The amount of WETH to sell.
-    /// @return FillResults amounts filled and fees paid by maker and taker.
-    function marketSellEthForZRXInternal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        uint256 wethSellAmount
-    )
-        internal
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Buys an exact amount of an ERC20 token using WETH.
-    /// @param orders Orders to fill. The maker asset is the ERC20 token to buy. The taker asset is WETH.
-    /// @param signatures Proof that the orders were created by their respective makers.
-    /// @param feeOrders to fill. The maker asset is ZRX and the taker asset is WETH.
-    /// @param feeSignatures Proof that the feeOrders were created by their respective makers.
-    /// @param makerTokenFillAmount Amount of the ERC20 token to buy.
-    /// @return totalFillResults Aggregated fill results of buying the ERC20 and ZRX tokens.
-    function marketBuyERC20TokensInternal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        LibOrder.Order[] memory feeOrders,
-        bytes[] memory feeSignatures,
-        uint256 makerTokenFillAmount
-    )
-        internal
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Buys an all of the ERC721 tokens in the orders.
-    /// @param orders Orders to fill. The maker asset is the ERC721 token to buy. The taker asset is WETH.
-    /// @param signatures Proof that the orders were created by their respective makers.
-    /// @param feeOrders to fill. The maker asset is ZRX and the taker asset is WETH.
-    /// @param feeSignatures Proof that the feeOrders were created by their respective makers.
-    /// @return totalFillResults Aggregated fill results of buying the ERC721 tokens and ZRX tokens.
-    function batchBuyERC721TokensInternal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        LibOrder.Order[] memory feeOrders,
-        bytes[] memory feeSignatures
-    )
-        internal
-        returns (LibFillResults.FillResults memory totalFillResults);
+        view;
 }
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MMarketBuyZrx.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MMarketBuyZrx.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/libs/LibFillResults.sol";
-import "../../protocol/Exchange/libs/LibOrder.sol";
-
-
-contract MMarketBuyZrx {
-
-    /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account the fees on buying fee tokens. This will guarantee
-    ///      At least zrxBuyAmount of ZRX fee tokens are purchased (sometimes slightly over due to rounding issues).
-    ///      It is possible that a request to buy 200 ZRX fee tokens will require purchasing 202 ZRX tokens
-    ///      As 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
-    /// @param orders An array of Order struct containing order specifications for fees.
-    /// @param signatures An array of Proof that order has been created by maker for the fee orders.
-    /// @param zrxBuyAmount The number of requested ZRX fee tokens.
-    /// @return totalFillResults Amounts filled and fees paid by maker and taker. makerTokenAmount is the zrx amount deducted of fees
-    function marketBuyZrxInternal(
-        LibOrder.Order[] memory orders,
-        bytes[] memory signatures,
-        uint256 zrxBuyAmount
-    )
-        internal
-        returns (LibFillResults.FillResults memory totalFillResults);
-}
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MWeth.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MWeth.sol
@@ -0,0 +1,41 @@
+/*
+
+  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;
+
+
+contract MWeth {
+
+    /// @dev Converts message call's ETH value into WETH.
+    function convertEthToWeth()
+        internal;
+
+    /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient.
+    ///      Refunds any excess ETH to msg.sender.
+    /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders.
+    /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees.
+    /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient.
+    /// @param feeRecipient Address that will receive ETH when orders are filled.
+    function transferEthFeeAndRefund(
+        uint256 wethSoldExcludingFeeOrders,
+        uint256 wethSoldForZrx,
+        uint256 feePercentage,
+        address feeRecipient
+    )
+        internal;
+}
--- a/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol
+++ b/packages/contracts/src/2.0.0/protocol/AssetProxy/ERC721Proxy.sol
@@ -93,7 +93,7 @@ contract ERC721Proxy is
                // |          | 4      | 12 + 20 |   1. token address                  |
                // |          | 36     |         |   2. tokenId                        |
                
-                // We construct calldata for the `token.safeTransferFrom` ABI.
+                // We construct calldata for the `token.transferFrom` ABI.
                // The layout of this calldata is in the table below.
                // 
                // | Area     | Offset | Length  | Contents                            |
@@ -116,7 +116,7 @@ contract ERC721Proxy is
                }

                /////// Setup Header Area ///////
-                // This area holds the 4-byte `transferFromSelector`.
+                // This area holds the 4-byte `transferFrom` selector.
                // Any trailing data in transferFromSelector will be
                // overwritten in the next `mstore` call.
                mstore(0, 0x23b872dd00000000000000000000000000000000000000000000000000000000)
--- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol
@@ -32,6 +32,7 @@ contract MixinWrapperFunctions is
    LibAbiEncoder,
    MExchangeCore
 {
+
    /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled.
    /// @param order Order struct containing order specifications.
    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
@@ -56,7 +57,7 @@ contract MixinWrapperFunctions is
        return fillResults;
    }

-    /// @dev Fills an order with specified parameters and ECDSA signature.
+    /// @dev Fills the input order.
    ///      Returns false if the transaction would otherwise revert.
    /// @param order Order struct containing order specifications.
    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
@@ -118,7 +119,8 @@ contract MixinWrapperFunctions is
        public
        returns (FillResults memory totalFillResults)
    {
-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {
            FillResults memory singleFillResults = fillOrder(
                orders[i],
                takerAssetFillAmounts[i],
@@ -143,7 +145,8 @@ contract MixinWrapperFunctions is
        public
        returns (FillResults memory totalFillResults)
    {
-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {
            FillResults memory singleFillResults = fillOrKillOrder(
                orders[i],
                takerAssetFillAmounts[i],
@@ -169,7 +172,8 @@ contract MixinWrapperFunctions is
        public
        returns (FillResults memory totalFillResults)
    {
-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {
            FillResults memory singleFillResults = fillOrderNoThrow(
                orders[i],
                takerAssetFillAmounts[i],
@@ -195,7 +199,8 @@ contract MixinWrapperFunctions is
    {
        bytes memory takerAssetData = orders[0].takerAssetData;
    
-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {

            // We assume that asset being sold by taker is the same for each order.
            // Rather than passing this in as calldata, we use the takerAssetData from the first order in all later orders.
@@ -215,7 +220,7 @@ contract MixinWrapperFunctions is
            addFillResults(totalFillResults, singleFillResults);

            // Stop execution if the entire amount of takerAsset has been sold
-            if (totalFillResults.takerAssetFilledAmount == takerAssetFillAmount) {
+            if (totalFillResults.takerAssetFilledAmount >= takerAssetFillAmount) {
                break;
            }
        }
@@ -238,7 +243,8 @@ contract MixinWrapperFunctions is
    {
        bytes memory takerAssetData = orders[0].takerAssetData;

-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {

            // We assume that asset being sold by taker is the same for each order.
            // Rather than passing this in as calldata, we use the takerAssetData from the first order in all later orders.
@@ -258,7 +264,7 @@ contract MixinWrapperFunctions is
            addFillResults(totalFillResults, singleFillResults);

            // Stop execution if the entire amount of takerAsset has been sold
-            if (totalFillResults.takerAssetFilledAmount == takerAssetFillAmount) {
+            if (totalFillResults.takerAssetFilledAmount >= takerAssetFillAmount) {
                break;
            }
        }
@@ -280,7 +286,8 @@ contract MixinWrapperFunctions is
    {
        bytes memory makerAssetData = orders[0].makerAssetData;

-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {

            // We assume that asset being bought by taker is the same for each order.
            // Rather than passing this in as calldata, we copy the makerAssetData from the first order onto all later orders.
@@ -308,7 +315,7 @@ contract MixinWrapperFunctions is
            addFillResults(totalFillResults, singleFillResults);

            // Stop execution if the entire amount of makerAsset has been bought
-            if (totalFillResults.makerAssetFilledAmount == makerAssetFillAmount) {
+            if (totalFillResults.makerAssetFilledAmount >= makerAssetFillAmount) {
                break;
            }
        }
@@ -331,7 +338,8 @@ contract MixinWrapperFunctions is
    {
        bytes memory makerAssetData = orders[0].makerAssetData;

-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {

            // We assume that asset being bought by taker is the same for each order.
            // Rather than passing this in as calldata, we copy the makerAssetData from the first order onto all later orders.
@@ -359,7 +367,7 @@ contract MixinWrapperFunctions is
            addFillResults(totalFillResults, singleFillResults);

            // Stop execution if the entire amount of makerAsset has been bought
-            if (totalFillResults.makerAssetFilledAmount == makerAssetFillAmount) {
+            if (totalFillResults.makerAssetFilledAmount >= makerAssetFillAmount) {
                break;
            }
        }
@@ -371,7 +379,8 @@ contract MixinWrapperFunctions is
    function batchCancelOrders(LibOrder.Order[] memory orders)
        public
    {
-        for (uint256 i = 0; i < orders.length; i++) {
+        uint256 ordersLength = orders.length;
+        for (uint256 i = 0; i != ordersLength; i++) {
            cancelOrder(orders[i]);
        }
    }
@@ -384,9 +393,9 @@ contract MixinWrapperFunctions is
        view
        returns (LibOrder.OrderInfo[] memory)
    {
-        uint256 length = orders.length;
-        LibOrder.OrderInfo[] memory ordersInfo = new LibOrder.OrderInfo[](length);
-        for (uint256 i = 0; i < length; i++) {
+        uint256 ordersLength = orders.length;
+        LibOrder.OrderInfo[] memory ordersInfo = new LibOrder.OrderInfo[](ordersLength);
+        for (uint256 i = 0; i != ordersLength; i++) {
            ordersInfo[i] = getOrderInfo(orders[i]);
        }
        return ordersInfo;
--- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibConstants.sol
@@ -19,11 +19,23 @@
 pragma solidity 0.4.24;


+// solhint-disable max-line-length
 contract LibConstants {
   
    // Asset data for ZRX token. Used for fee transfers.
    // @TODO: Hardcode constant when we deploy. Currently 
    //        not constant to make testing easier.
+
+    // The proxyId for ZRX_ASSET_DATA is bytes4(keccak256("ERC20Token(address)")) = 0xf47261b0
+    
+    // Kovan ZRX address is 0x6ff6c0ff1d68b964901f986d4c9fa3ac68346570.
+    // The ABI encoded proxyId and address is 0xf47261b00000000000000000000000006ff6c0ff1d68b964901f986d4c9fa3ac68346570
+    // bytes constant public ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6f\xf6\xc0\xff\x1d\x68\xb9\x64\x90\x1f\x98\x6d\x4c\x9f\xa3\xac\x68\x34\x65\x70";
+    
+    // Mainnet ZRX address is 0xe41d2489571d322189246dafa5ebde1f4699f498.
+    // The ABI encoded proxyId and address is 0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498
+    // bytes constant public ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe4\x1d\x24\x89\x57\x1d\x32\x21\x89\x24\x6d\xaf\xa5\xeb\xde\x1f\x46\x99\xf4\x98";
+    
    // solhint-disable-next-line var-name-mixedcase
    bytes public ZRX_ASSET_DATA;

@@ -34,3 +46,4 @@ contract LibConstants {
        ZRX_ASSET_DATA = zrxAssetData;
    }
 }
+// solhint-enable max-line-length
--- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibMath.sol
@@ -33,7 +33,8 @@ contract LibMath is
    function getPartialAmount(
        uint256 numerator,
        uint256 denominator,
-        uint256 target)
+        uint256 target
+    )
        internal
        pure
        returns (uint256 partialAmount)
@@ -53,7 +54,8 @@ contract LibMath is
    function isRoundingError(
        uint256 numerator,
        uint256 denominator,
-        uint256 target)
+        uint256 target
+    )
        internal
        pure
        returns (bool isError)
--- a/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/libs/LibOrder.sol
@@ -103,20 +103,20 @@ contract LibOrder is
        bytes32 takerAssetDataHash = keccak256(order.takerAssetData);

        // Assembly for more efficiently computing:
-        //    keccak256(abi.encode(
-        //        order.makerAddress,
-        //        order.takerAddress,
-        //        order.feeRecipientAddress,
-        //        order.senderAddress,
-        //        order.makerAssetAmount,
-        //        order.takerAssetAmount,
-        //        order.makerFee,
-        //        order.takerFee,
-        //        order.expirationTimeSeconds,
-        //        order.salt,
-        //        keccak256(order.makerAssetData),
-        //        keccak256(order.takerAssetData)
-        //    ));
+        // keccak256(abi.encode(
+        //     order.makerAddress,
+        //     order.takerAddress,
+        //     order.feeRecipientAddress,
+        //     order.senderAddress,
+        //     order.makerAssetAmount,
+        //     order.takerAssetAmount,
+        //     order.makerFee,
+        //     order.takerFee,
+        //     order.expirationTimeSeconds,
+        //     order.salt,
+        //     keccak256(order.makerAssetData),
+        //     keccak256(order.takerAssetData)
+        // ));

        assembly {
            // Backup
--- a/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol
+++ b/packages/contracts/src/2.0.0/test/DummyERC20Token/DummyERC20Token.sol
@@ -22,7 +22,10 @@ import "../Mintable/Mintable.sol";
 import "../../utils/Ownable/Ownable.sol";


-contract DummyERC20Token is Mintable, Ownable {
+contract DummyERC20Token is 
+    Mintable,
+    Ownable
+{
    string public name;
    string public symbol;
    uint256 public decimals;
--- a/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol
+++ b/packages/contracts/src/2.0.0/test/TestAssetProxyDispatcher/TestAssetProxyDispatcher.sol
@@ -21,7 +21,9 @@ pragma solidity 0.4.24;
 import "../../protocol/Exchange/MixinAssetProxyDispatcher.sol";


-contract TestAssetProxyDispatcher is MixinAssetProxyDispatcher {
+contract TestAssetProxyDispatcher is 
+    MixinAssetProxyDispatcher
+{
    function publicDispatchTransferFrom(
        bytes memory assetData,
        address from,
--- a/packages/contracts/src/2.0.0/test/TestConstants/TestConstants.sol
+++ b/packages/contracts/src/2.0.0/test/TestConstants/TestConstants.sol
@@ -0,0 +1,57 @@
+/*
+
+  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 "../../utils/LibBytes/LibBytes.sol";
+
+
+// solhint-disable max-line-length
+contract TestConstants {
+   
+    using LibBytes for bytes;
+
+    bytes4 constant internal ERC20_PROXY_ID = bytes4(keccak256("ERC20Token(address)"));
+    
+    address constant internal KOVAN_ZRX_ADDRESS = 0x6Ff6C0Ff1d68b964901F986d4C9FA3ac68346570;
+    bytes constant internal KOVAN_ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6f\xf6\xc0\xff\x1d\x68\xb9\x64\x90\x1f\x98\x6d\x4c\x9f\xa3\xac\x68\x34\x65\x70";
+    
+    address constant internal MAINNET_ZRX_ADDRESS = 0xE41d2489571d322189246DaFA5ebDe1F4699F498;
+    bytes constant public MAINNET_ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe4\x1d\x24\x89\x57\x1d\x32\x21\x89\x24\x6d\xaf\xa5\xeb\xde\x1f\x46\x99\xf4\x98";
+    
+    function assertValidZrxAssetData()
+        public
+        pure
+        returns (bool)
+    {
+        bytes memory kovanZrxAssetData = abi.encodeWithSelector(ERC20_PROXY_ID, KOVAN_ZRX_ADDRESS);
+        require(
+            kovanZrxAssetData.equals(KOVAN_ZRX_ASSET_DATA),
+            "INVALID_KOVAN_ZRX_ASSET_DATA"
+        );
+
+        bytes memory mainetZrxAssetData = abi.encodeWithSelector(ERC20_PROXY_ID, MAINNET_ZRX_ADDRESS);
+        require(
+            mainetZrxAssetData.equals(MAINNET_ZRX_ASSET_DATA),
+            "INVALID_MAINNET_ZRX_ASSET_DATA"
+        );
+
+        return true;
+    }
+}
+// solhint-enable max-line-length
--- a/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol
+++ b/packages/contracts/src/2.0.0/utils/SafeMath/SafeMath.sol
@@ -34,7 +34,7 @@ contract SafeMath {
    {
        require(
            b <= a,
-            "UINT256_OVERFLOW"
+            "UINT256_UNDERFLOW"
        );
        return a - b;
    }
--- a/packages/contracts/test/exchange/libs.ts
+++ b/packages/contracts/test/exchange/libs.ts
@@ -4,6 +4,7 @@ import { SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';

+import { TestConstantsContract } from '../../generated_contract_wrappers/test_constants';
 import { TestLibsContract } from '../../generated_contract_wrappers/test_libs';
 import { addressUtils } from '../utils/address_utils';
 import { artifacts } from '../utils/artifacts';
@@ -21,6 +22,7 @@ describe('Exchange libs', () => {
    let signedOrder: SignedOrder;
    let orderFactory: OrderFactory;
    let libs: TestLibsContract;
+    let testConstants: TestConstantsContract;

    before(async () => {
        await blockchainLifecycle.startAsync();
@@ -32,6 +34,11 @@ describe('Exchange libs', () => {
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
        const makerAddress = accounts[0];
        libs = await TestLibsContract.deployFrom0xArtifactAsync(artifacts.TestLibs, provider, txDefaults);
+        testConstants = await TestConstantsContract.deployFrom0xArtifactAsync(
+            artifacts.TestConstants,
+            provider,
+            txDefaults,
+        );

        const defaultOrderParams = {
            ...constants.STATIC_ORDER_PARAMS,
@@ -52,6 +59,15 @@ describe('Exchange libs', () => {
        await blockchainLifecycle.revertAsync();
    });

+    describe('LibConstants', () => {
+        describe('ZRX_ASSET_DATA', () => {
+            it('should have the correct ZRX_ASSET_DATA', async () => {
+                const isValid = await testConstants.assertValidZrxAssetData.callAsync();
+                expect(isValid).to.be.equal(true);
+            });
+        });
+    });
+
    describe('LibOrder', () => {
        describe('getOrderSchema', () => {
            it('should output the correct order schema hash', async () => {
--- a/packages/contracts/test/exchange/signature_validator.ts
+++ b/packages/contracts/test/exchange/signature_validator.ts
@@ -9,8 +9,8 @@ import {
    TestSignatureValidatorContract,
    TestSignatureValidatorSignatureValidatorApprovalEventArgs,
 } from '../../generated_contract_wrappers/test_signature_validator';
-import { TestValidatorContract } from '../../generated_contract_wrappers/test_validator';
-import { TestWalletContract } from '../../generated_contract_wrappers/test_wallet';
+import { ValidatorContract } from '../../generated_contract_wrappers/validator';
+import { WalletContract } from '../../generated_contract_wrappers/wallet';
 import { addressUtils } from '../utils/address_utils';
 import { artifacts } from '../utils/artifacts';
 import { expectContractCallFailed } from '../utils/assertions';
@@ -29,8 +29,8 @@ describe('MixinSignatureValidator', () => {
    let signedOrder: SignedOrder;
    let orderFactory: OrderFactory;
    let signatureValidator: TestSignatureValidatorContract;
-    let testWallet: TestWalletContract;
-    let testValidator: TestValidatorContract;
+    let testWallet: WalletContract;
+    let testValidator: ValidatorContract;
    let signerAddress: string;
    let signerPrivateKey: Buffer;
    let notSignerAddress: string;
@@ -53,14 +53,14 @@ describe('MixinSignatureValidator', () => {
            provider,
            txDefaults,
        );
-        testWallet = await TestWalletContract.deployFrom0xArtifactAsync(
-            artifacts.TestWallet,
+        testWallet = await WalletContract.deployFrom0xArtifactAsync(
+            artifacts.Wallet,
            provider,
            txDefaults,
            signerAddress,
        );
-        testValidator = await TestValidatorContract.deployFrom0xArtifactAsync(
-            artifacts.TestValidator,
+        testValidator = await ValidatorContract.deployFrom0xArtifactAsync(
+            artifacts.Validator,
            provider,
            txDefaults,
            signerAddress,
--- a/packages/contracts/test/forwarder/forwarder.ts
+++ b/packages/contracts/test/forwarder/forwarder.ts
--- a/packages/contracts/test/utils/artifacts.ts
+++ b/packages/contracts/test/utils/artifacts.ts
@@ -15,12 +15,13 @@ import * as MultiSigWallet from '../../artifacts/MultiSigWallet.json';
 import * as MultiSigWalletWithTimeLock from '../../artifacts/MultiSigWalletWithTimeLock.json';
 import * as TestAssetProxyDispatcher from '../../artifacts/TestAssetProxyDispatcher.json';
 import * as TestAssetProxyOwner from '../../artifacts/TestAssetProxyOwner.json';
+import * as TestConstants from '../../artifacts/TestConstants.json';
 import * as TestLibBytes from '../../artifacts/TestLibBytes.json';
 import * as TestLibs from '../../artifacts/TestLibs.json';
 import * as TestSignatureValidator from '../../artifacts/TestSignatureValidator.json';
-import * as TestValidator from '../../artifacts/TestValidator.json';
-import * as TestWallet from '../../artifacts/TestWallet.json';
 import * as TokenRegistry from '../../artifacts/TokenRegistry.json';
+import * as Validator from '../../artifacts/Validator.json';
+import * as Wallet from '../../artifacts/Wallet.json';
 import * as EtherToken from '../../artifacts/WETH9.json';
 import * as Whitelist from '../../artifacts/Whitelist.json';
 import * as ZRX from '../../artifacts/ZRXToken.json';
@@ -42,11 +43,12 @@ export const artifacts = {
    MultiSigWalletWithTimeLock: (MultiSigWalletWithTimeLock as any) as ContractArtifact,
    TestAssetProxyOwner: (TestAssetProxyOwner as any) as ContractArtifact,
    TestAssetProxyDispatcher: (TestAssetProxyDispatcher as any) as ContractArtifact,
+    TestConstants: (TestConstants as any) as ContractArtifact,
    TestLibBytes: (TestLibBytes as any) as ContractArtifact,
    TestLibs: (TestLibs as any) as ContractArtifact,
    TestSignatureValidator: (TestSignatureValidator as any) as ContractArtifact,
-    TestValidator: (TestValidator as any) as ContractArtifact,
-    TestWallet: (TestWallet as any) as ContractArtifact,
+    Validator: (Validator as any) as ContractArtifact,
+    Wallet: (Wallet as any) as ContractArtifact,
    TokenRegistry: (TokenRegistry as any) as ContractArtifact,
    Whitelist: (Whitelist as any) as ContractArtifact,
    ZRX: (ZRX as any) as ContractArtifact,
--- a/packages/contracts/test/utils/constants.ts
+++ b/packages/contracts/test/utils/constants.ts
@@ -49,4 +49,6 @@ export const constants = {
        takerFee: Web3Wrapper.toBaseUnitAmount(new BigNumber(1), 18),
    },
    WORD_LENGTH: 32,
+    ZERO_AMOUNT: new BigNumber(0),
+    PERCENTAGE_DENOMINATOR: new BigNumber(10).pow(18),
 };
--- a/packages/contracts/test/utils/forwarder_wrapper.ts
+++ b/packages/contracts/test/utils/forwarder_wrapper.ts
@@ -1,5 +1,4 @@
-import { assetDataUtils } from '@0xproject/order-utils';
-import { AssetProxyId, SignedOrder } from '@0xproject/types';
+import { SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import { Provider, TransactionReceiptWithDecodedLogs, TxDataPayable } from 'ethereum-types';
@@ -12,209 +11,108 @@ import { formatters } from './formatters';
 import { LogDecoder } from './log_decoder';
 import { MarketSellOrders } from './types';

-const DEFAULT_FEE_PROPORTION = 0;
-const PERCENTAGE_DENOMINATOR = 10000;
-const ZERO_AMOUNT = new BigNumber(0);
-const INSUFFICENT_ORDERS_FOR_MAKER_AMOUNT = 'Unable to satisfy makerAssetFillAmount with provided orders';
-
 export class ForwarderWrapper {
    private readonly _web3Wrapper: Web3Wrapper;
    private readonly _forwarderContract: ForwarderContract;
    private readonly _logDecoder: LogDecoder;
-    private readonly _zrxAddress: string;
-    private static _createOptimizedSellOrders(signedOrders: SignedOrder[]): MarketSellOrders {
-        const marketSellOrders = formatters.createMarketSellOrders(signedOrders, ZERO_AMOUNT);
-        const assetDataId = assetDataUtils.decodeAssetProxyId(signedOrders[0].makerAssetData);
-        // Contract will fill this in for us as all of the assetData is assumed to be the same
-        for (let i = 0; i < signedOrders.length; i++) {
-            if (i !== 0 && assetDataId === AssetProxyId.ERC20) {
-                // Forwarding contract will fill this in from the first order
-                marketSellOrders.orders[i].makerAssetData = constants.NULL_BYTES;
+    public static getPercentageOfValue(value: BigNumber, percentage: number): BigNumber {
+        const numerator = constants.PERCENTAGE_DENOMINATOR.times(percentage).dividedToIntegerBy(100);
+        const newValue = value.times(numerator).dividedToIntegerBy(constants.PERCENTAGE_DENOMINATOR);
+        return newValue;
+    }
+    public static getWethForFeeOrders(feeAmount: BigNumber, feeOrders: SignedOrder[]): BigNumber {
+        let wethAmount = new BigNumber(0);
+        let remainingFeeAmount = feeAmount;
+        _.forEach(feeOrders, feeOrder => {
+            const feeAvailable = feeOrder.makerAssetAmount.minus(feeOrder.takerFee);
+            if (!remainingFeeAmount.isZero() && feeAvailable.gt(remainingFeeAmount)) {
+                wethAmount = wethAmount
+                    .plus(feeOrder.takerAssetAmount.times(remainingFeeAmount).dividedToIntegerBy(feeAvailable))
+                    .plus(1);
+                remainingFeeAmount = new BigNumber(0);
+            } else if (!remainingFeeAmount.isZero()) {
+                wethAmount = wethAmount.plus(feeOrder.takerAssetAmount);
+                remainingFeeAmount = remainingFeeAmount.minus(feeAvailable);
            }
-            marketSellOrders.orders[i].takerAssetData = constants.NULL_BYTES;
-        }
-        return marketSellOrders;
+        });
+        return wethAmount;
    }
-    private static _createOptimizedZRXSellOrders(signedOrders: SignedOrder[]): MarketSellOrders {
-        const marketSellOrders = formatters.createMarketSellOrders(signedOrders, ZERO_AMOUNT);
-        // Contract will fill this in for us as all of the assetData is assumed to be the same
-        for (let i = 0; i < signedOrders.length; i++) {
-            marketSellOrders.orders[i].makerAssetData = constants.NULL_BYTES;
-            marketSellOrders.orders[i].takerAssetData = constants.NULL_BYTES;
-        }
-        return marketSellOrders;
+    private static _createOptimizedOrders(signedOrders: SignedOrder[]): MarketSellOrders {
+        _.forEach(signedOrders, (signedOrder, index) => {
+            signedOrder.takerAssetData = constants.NULL_BYTES;
+            if (index > 0) {
+                signedOrder.makerAssetData = constants.NULL_BYTES;
+            }
+        });
+        const params = formatters.createMarketSellOrders(signedOrders, constants.ZERO_AMOUNT);
+        return params;
    }
-    private static _calculateAdditionalFeeProportionAmount(feeProportion: number, fillAmountWei: BigNumber): BigNumber {
-        if (feeProportion > 0) {
-            // Add to the total ETH transaction to ensure all NFTs can be filled after fees
-            // 150 = 1.5% = 0.015
-            const denominator = new BigNumber(1).minus(new BigNumber(feeProportion).dividedBy(PERCENTAGE_DENOMINATOR));
-            return fillAmountWei.dividedBy(denominator).round(0, BigNumber.ROUND_FLOOR);
-        }
-        return fillAmountWei;
+    private static _createOptimizedZrxOrders(signedOrders: SignedOrder[]): MarketSellOrders {
+        _.forEach(signedOrders, signedOrder => {
+            signedOrder.makerAssetData = constants.NULL_BYTES;
+            signedOrder.takerAssetData = constants.NULL_BYTES;
+        });
+        const params = formatters.createMarketSellOrders(signedOrders, constants.ZERO_AMOUNT);
+        return params;
    }
-    constructor(contractInstance: ForwarderContract, provider: Provider, zrxAddress: string) {
+    constructor(contractInstance: ForwarderContract, provider: Provider) {
        this._forwarderContract = contractInstance;
        this._web3Wrapper = new Web3Wrapper(provider);
        this._logDecoder = new LogDecoder(this._web3Wrapper, this._forwarderContract.address);
-        // this._web3Wrapper.abiDecoder.addABI(contractInstance.abi);
-        this._zrxAddress = zrxAddress;
    }
-    public async marketBuyTokensWithEthAsync(
+    public async marketSellOrdersWithEthAsync(
        orders: SignedOrder[],
        feeOrders: SignedOrder[],
-        makerTokenBuyAmount: BigNumber,
        txData: TxDataPayable,
-        opts: { feeProportion?: number; feeRecipient?: string } = {},
+        opts: { feePercentage?: BigNumber; feeRecipient?: string } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
-        const params = ForwarderWrapper._createOptimizedSellOrders(orders);
-        const feeParams = ForwarderWrapper._createOptimizedZRXSellOrders(feeOrders);
-        const feeProportion = _.isUndefined(opts.feeProportion) ? DEFAULT_FEE_PROPORTION : opts.feeProportion;
+        const params = ForwarderWrapper._createOptimizedOrders(orders);
+        const feeParams = ForwarderWrapper._createOptimizedZrxOrders(feeOrders);
+        const feePercentage = _.isUndefined(opts.feePercentage) ? constants.ZERO_AMOUNT : opts.feePercentage;
        const feeRecipient = _.isUndefined(opts.feeRecipient) ? constants.NULL_ADDRESS : opts.feeRecipient;
-        const txHash: string = await this._forwarderContract.marketBuyTokensWithEth.sendTransactionAsync(
+        const txHash = await this._forwarderContract.marketSellOrdersWithEth.sendTransactionAsync(
            params.orders,
            params.signatures,
            feeParams.orders,
            feeParams.signatures,
-            makerTokenBuyAmount,
-            feeProportion,
+            feePercentage,
            feeRecipient,
            txData,
        );
        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
        return tx;
    }
-    public async marketSellEthForERC20Async(
+    public async marketBuyOrdersWithEthAsync(
        orders: SignedOrder[],
        feeOrders: SignedOrder[],
+        makerAssetFillAmount: BigNumber,
        txData: TxDataPayable,
-        opts: { feeProportion?: number; feeRecipient?: string } = {},
+        opts: { feePercentage?: BigNumber; feeRecipient?: string } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
-        const assetDataId = assetDataUtils.decodeAssetProxyId(orders[0].makerAssetData);
-        if (assetDataId !== AssetProxyId.ERC20) {
-            throw new Error('Asset type not supported by marketSellEthForERC20');
-        }
-        const params = ForwarderWrapper._createOptimizedSellOrders(orders);
-        const feeParams = ForwarderWrapper._createOptimizedZRXSellOrders(feeOrders);
-        const feeProportion = _.isUndefined(opts.feeProportion) ? DEFAULT_FEE_PROPORTION : opts.feeProportion;
+        const params = ForwarderWrapper._createOptimizedOrders(orders);
+        const feeParams = ForwarderWrapper._createOptimizedZrxOrders(feeOrders);
+        const feePercentage = _.isUndefined(opts.feePercentage) ? constants.ZERO_AMOUNT : opts.feePercentage;
        const feeRecipient = _.isUndefined(opts.feeRecipient) ? constants.NULL_ADDRESS : opts.feeRecipient;
-        const txHash: string = await this._forwarderContract.marketSellEthForERC20.sendTransactionAsync(
+        const txHash = await this._forwarderContract.marketBuyOrdersWithEth.sendTransactionAsync(
            params.orders,
+            makerAssetFillAmount,
            params.signatures,
            feeParams.orders,
            feeParams.signatures,
-            feeProportion,
+            feePercentage,
            feeRecipient,
            txData,
        );
        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
        return tx;
    }
-    public async calculateMarketBuyFillAmountWeiAsync(
-        orders: SignedOrder[],
-        feeOrders: SignedOrder[],
-        feeProportion: number,
-        makerAssetFillAmount: BigNumber,
-    ): Promise<BigNumber> {
-        const assetProxyId = assetDataUtils.decodeAssetProxyId(orders[0].makerAssetData);
-        switch (assetProxyId) {
-            case AssetProxyId.ERC20: {
-                const fillAmountWei = this._calculateMarketBuyERC20FillAmountAsync(
-                    orders,
-                    feeOrders,
-                    feeProportion,
-                    makerAssetFillAmount,
-                );
-                return fillAmountWei;
-            }
-            case AssetProxyId.ERC721: {
-                const fillAmountWei = await this._calculateMarketBuyERC721FillAmountAsync(
-                    orders,
-                    feeOrders,
-                    feeProportion,
-                );
-                return fillAmountWei;
-            }
-            default:
-                throw new Error(`Invalid Asset Proxy Id: ${assetProxyId}`);
-        }
-    }
-    private async _calculateMarketBuyERC20FillAmountAsync(
-        orders: SignedOrder[],
-        feeOrders: SignedOrder[],
-        feeProportion: number,
-        makerAssetFillAmount: BigNumber,
-    ): Promise<BigNumber> {
-        const makerAssetData = assetDataUtils.decodeAssetDataOrThrow(orders[0].makerAssetData);
-        const makerAssetToken = makerAssetData.tokenAddress;
-        const params = formatters.createMarketBuyOrders(orders, makerAssetFillAmount);
-
-        let fillAmountWei;
-        if (makerAssetToken === this._zrxAddress) {
-            // If buying ZRX we buy the tokens and fees from the ZRX order in one step
-            const expectedBuyFeeTokensFillResults = await this._forwarderContract.calculateMarketBuyZrxResults.callAsync(
-                params.orders,
-                makerAssetFillAmount,
-            );
-            if (expectedBuyFeeTokensFillResults.makerAssetFilledAmount.lessThan(makerAssetFillAmount)) {
-                throw new Error(INSUFFICENT_ORDERS_FOR_MAKER_AMOUNT);
-            }
-            fillAmountWei = expectedBuyFeeTokensFillResults.takerAssetFilledAmount;
-        } else {
-            const expectedMarketBuyFillResults = await this._forwarderContract.calculateMarketBuyResults.callAsync(
-                params.orders,
-                makerAssetFillAmount,
-            );
-            if (expectedMarketBuyFillResults.makerAssetFilledAmount.lessThan(makerAssetFillAmount)) {
-                throw new Error(INSUFFICENT_ORDERS_FOR_MAKER_AMOUNT);
-            }
-            fillAmountWei = expectedMarketBuyFillResults.takerAssetFilledAmount;
-            const expectedFeeAmount = expectedMarketBuyFillResults.takerFeePaid;
-            if (expectedFeeAmount.greaterThan(ZERO_AMOUNT)) {
-                const expectedFeeFillFillAmountWei = await this._calculateMarketBuyERC20FillAmountAsync(
-                    feeOrders,
-                    [],
-                    DEFAULT_FEE_PROPORTION,
-                    expectedFeeAmount,
-                );
-                fillAmountWei = fillAmountWei.plus(expectedFeeFillFillAmountWei);
-            }
-        }
-        fillAmountWei = ForwarderWrapper._calculateAdditionalFeeProportionAmount(feeProportion, fillAmountWei);
-        return fillAmountWei;
-    }
-    private async _calculateMarketBuyERC721FillAmountAsync(
-        orders: SignedOrder[],
-        feeOrders: SignedOrder[],
-        feeProportion: number,
-    ): Promise<BigNumber> {
-        // Total cost when buying ERC721 is the total cost of all ERC721 orders + any fee abstraction
-        let fillAmountWei = _.reduce(
-            orders,
-            (totalAmount: BigNumber, order: SignedOrder) => {
-                return totalAmount.plus(order.takerAssetAmount);
-            },
-            ZERO_AMOUNT,
-        );
-        const totalFees = _.reduce(
-            orders,
-            (totalAmount: BigNumber, order: SignedOrder) => {
-                return totalAmount.plus(order.takerFee);
-            },
-            ZERO_AMOUNT,
-        );
-        if (totalFees.greaterThan(ZERO_AMOUNT)) {
-            // Calculate the ZRX fee abstraction cost
-            const emptyFeeOrders: SignedOrder[] = [];
-            const expectedFeeAmountWei = await this._calculateMarketBuyERC20FillAmountAsync(
-                feeOrders,
-                emptyFeeOrders,
-                DEFAULT_FEE_PROPORTION,
-                totalFees,
-            );
-            fillAmountWei = fillAmountWei.plus(expectedFeeAmountWei);
-        }
-        fillAmountWei = ForwarderWrapper._calculateAdditionalFeeProportionAmount(feeProportion, fillAmountWei);
-        return fillAmountWei;
+    public async withdrawERC20Async(
+        tokenAddress: string,
+        amount: BigNumber,
+        txData: TxDataPayable,
+    ): Promise<TransactionReceiptWithDecodedLogs> {
+        const txHash = await this._forwarderContract.withdrawERC20.sendTransactionAsync(tokenAddress, amount, txData);
+        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return tx;
    }
 }
--- a/packages/dev-utils/CHANGELOG.json
+++ b/packages/dev-utils/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.1",
--- a/packages/dev-utils/CHANGELOG.md
+++ b/packages/dev-utils/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Dependencies updated
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/dev-utils",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -30,8 +30,8 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/dev-utils/README.md",
    "devDependencies": {
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^2.2.42",
        "chai": "^4.0.1",
@@ -45,12 +45,12 @@
        "typescript": "2.7.1"
    },
    "dependencies": {
-        "@0xproject/subproviders": "^1.0.0",
-        "@0xproject/types": "^1.0.0-rc.1",
-        "@0xproject/utils": "^1.0.0",
-        "ethereum-types": "^1.0.0",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
+        "@0xproject/subproviders": "^1.0.1",
+        "@0xproject/types": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
+        "ethereum-types": "^1.0.1",
        "lodash": "^4.17.4"
    },
    "publishConfig": {
--- a/packages/ethereum-types/CHANGELOG.json
+++ b/packages/ethereum-types/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.1",
--- a/packages/ethereum-types/CHANGELOG.md
+++ b/packages/ethereum-types/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Dependencies updated
--- a/packages/ethereum-types/package.json
+++ b/packages/ethereum-types/package.json
@@ -1,6 +1,6 @@
 {
    "name": "ethereum-types",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -35,8 +35,8 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/ethereum-types/README.md",
    "devDependencies": {
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "copyfiles": "^1.2.0",
        "make-promises-safe": "^1.1.0",
        "shx": "^0.2.2",
--- a/packages/fill-scenarios/CHANGELOG.json
+++ b/packages/fill-scenarios/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "version": "1.0.1-rc.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1532366696
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.0",
--- a/packages/fill-scenarios/CHANGELOG.md
+++ b/packages/fill-scenarios/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.1-rc.1 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.0 - _July 23, 2018_

    * Dependencies updated
--- a/packages/fill-scenarios/package.json
+++ b/packages/fill-scenarios/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/fill-scenarios",
-    "version": "1.0.0-rc.1",
+    "version": "1.0.0",
    "description": "0x order fill scenario generator",
    "main": "lib/index.js",
    "types": "lib/index.d.ts",
@@ -28,10 +28,10 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/fill-scenarios/README.md",
    "devDependencies": {
-        "@0xproject/abi-gen": "^1.0.0",
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/sol-compiler": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
+        "@0xproject/abi-gen": "^1.0.1",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/sol-compiler": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
        "@types/lodash": "4.14.104",
        "copyfiles": "^1.2.0",
        "make-promises-safe": "^1.1.0",
@@ -41,13 +41,13 @@
        "typescript": "2.7.1"
    },
    "dependencies": {
-        "@0xproject/base-contract": "^1.0.0",
-        "@0xproject/order-utils": "^1.0.0-rc.1",
-        "@0xproject/types": "^1.0.0-rc.1",
-        "ethereum-types": "^1.0.0",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
+        "@0xproject/base-contract": "^1.0.1",
+        "@0xproject/order-utils": "^1.0.0",
+        "@0xproject/types": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
+        "ethereum-types": "^1.0.1",
        "ethers": "3.0.22",
        "lodash": "^4.17.4"
    },
--- a/packages/json-schemas/CHANGELOG.json
+++ b/packages/json-schemas/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "version": "1.0.1-rc.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1532366696
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.0",
--- a/packages/json-schemas/CHANGELOG.md
+++ b/packages/json-schemas/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.1-rc.1 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.0 - _July 23, 2018_

    * Dependencies updated
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/json-schemas",
-    "version": "1.0.0-rc.1",
+    "version": "1.0.0",
    "engines": {
        "node": ">=6.12"
    },
@@ -47,15 +47,15 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/packages/json-schemas/README.md",
    "dependencies": {
-        "@0xproject/typescript-typings": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
        "@types/node": "^8.0.53",
        "jsonschema": "^1.2.0",
        "lodash.values": "^4.3.0"
    },
    "devDependencies": {
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
        "@types/lodash.foreach": "^4.5.3",
        "@types/lodash.values": "^4.3.3",
        "@types/mocha": "^2.2.42",
--- a/packages/metacoin/package.json
+++ b/packages/metacoin/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/metacoin",
-    "version": "0.0.10",
+    "version": "0.0.11",
    "engines": {
        "node": ">=6.12"
    },
@@ -29,25 +29,25 @@
    "author": "",
    "license": "Apache-2.0",
    "dependencies": {
-        "@0xproject/abi-gen": "^1.0.0",
-        "@0xproject/base-contract": "^1.0.0",
-        "@0xproject/sol-compiler": "^1.0.0",
-        "@0xproject/sol-cov": "^1.0.0",
-        "@0xproject/subproviders": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
-        "@0xproject/types": "^1.0.0-rc.1",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
+        "@0xproject/abi-gen": "^1.0.1",
+        "@0xproject/base-contract": "^1.0.1",
+        "@0xproject/sol-compiler": "^1.0.1",
+        "@0xproject/sol-cov": "^1.0.1",
+        "@0xproject/subproviders": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
+        "@0xproject/types": "^1.0.0",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
        "@types/mocha": "^5.2.2",
        "copyfiles": "^2.0.0",
-        "ethereum-types": "^1.0.0",
+        "ethereum-types": "^1.0.1",
        "ethers": "3.0.22",
        "lodash": "^4.17.4",
        "run-s": "^0.0.0"
    },
    "devDependencies": {
-        "@0xproject/dev-utils": "^1.0.0",
+        "@0xproject/dev-utils": "^1.0.1",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^2.0.1",
--- a/packages/migrations/CHANGELOG.json
+++ b/packages/migrations/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.1",
--- a/packages/migrations/CHANGELOG.md
+++ b/packages/migrations/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Dependencies updated
--- a/packages/migrations/artifacts/2.0.0/DummyERC20Token.json
+++ b/packages/migrations/artifacts/2.0.0/DummyERC20Token.json
--- a/packages/migrations/artifacts/2.0.0/DummyERC721Token.json
+++ b/packages/migrations/artifacts/2.0.0/DummyERC721Token.json
--- a/packages/migrations/artifacts/2.0.0/ERC721Proxy.json
+++ b/packages/migrations/artifacts/2.0.0/ERC721Proxy.json
--- a/packages/migrations/artifacts/2.0.0/ERC721Token.json
+++ b/packages/migrations/artifacts/2.0.0/ERC721Token.json
--- a/packages/migrations/artifacts/2.0.0/Exchange.json
+++ b/packages/migrations/artifacts/2.0.0/Exchange.json
--- a/packages/migrations/artifacts/2.0.0/ExchangeWrapper.json
+++ b/packages/migrations/artifacts/2.0.0/ExchangeWrapper.json
--- a/packages/migrations/artifacts/2.0.0/Forwarder.json
+++ b/packages/migrations/artifacts/2.0.0/Forwarder.json
--- a/packages/migrations/artifacts/2.0.0/TestAssetProxyDispatcher.json
+++ b/packages/migrations/artifacts/2.0.0/TestAssetProxyDispatcher.json
--- a/packages/migrations/artifacts/2.0.0/TestConstants.json
+++ b/packages/migrations/artifacts/2.0.0/TestConstants.json
--- a/packages/migrations/artifacts/2.0.0/TestLibs.json
+++ b/packages/migrations/artifacts/2.0.0/TestLibs.json
--- a/packages/migrations/artifacts/2.0.0/Validator.json
+++ b/packages/migrations/artifacts/2.0.0/Validator.json
@@ -0,0 +1,95 @@
+{
+	"schemaVersion": "2.0.0",
+	"contractName": "Validator",
+	"compilerOutput": {
+		"abi": [
+			{
+				"constant": true,
+				"inputs": [
+					{
+						"name": "hash",
+						"type": "bytes32"
+					},
+					{
+						"name": "signerAddress",
+						"type": "address"
+					},
+					{
+						"name": "signature",
+						"type": "bytes"
+					}
+				],
+				"name": "isValidSignature",
+				"outputs": [
+					{
+						"name": "isValid",
+						"type": "bool"
+					}
+				],
+				"payable": false,
+				"stateMutability": "view",
+				"type": "function"
+			},
+			{
+				"inputs": [
+					{
+						"name": "validSigner",
+						"type": "address"
+					}
+				],
+				"payable": false,
+				"stateMutability": "nonpayable",
+				"type": "constructor"
+			}
+		],
+		"evm": {
+			"bytecode": {
+				"linkReferences": {},
+				"object": "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",
+				"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE CALLVALUE DUP1 ISZERO PUSH2 0x10 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH1 0x40 MLOAD PUSH1 0x20 DUP1 PUSH2 0x134 DUP4 CODECOPY DUP2 ADD PUSH1 0x40 MSTORE MLOAD PUSH1 0x0 DUP1 SLOAD PUSH1 0x1 PUSH1 0xA0 PUSH1 0x2 EXP SUB SWAP1 SWAP3 AND PUSH1 0x1 PUSH1 0xA0 PUSH1 0x2 EXP SUB NOT SWAP1 SWAP3 AND SWAP2 SWAP1 SWAP2 OR SWAP1 SSTORE PUSH1 0xE3 DUP1 PUSH2 0x51 PUSH1 0x0 CODECOPY PUSH1 0x0 RETURN STOP PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH1 0x3E JUMPI PUSH4 0xFFFFFFFF PUSH29 0x100000000000000000000000000000000000000000000000000000000 PUSH1 0x0 CALLDATALOAD DIV AND PUSH4 0x93634702 DUP2 EQ PUSH1 0x43 JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH1 0x4E JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH1 0x7E PUSH1 0x4 DUP1 CALLDATALOAD SWAP1 PUSH1 0x24 DUP1 CALLDATALOAD PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND SWAP2 PUSH1 0x44 CALLDATALOAD SWAP2 DUP3 ADD SWAP2 ADD CALLDATALOAD PUSH1 0x92 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 ISZERO ISZERO DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST POP POP PUSH1 0x0 SLOAD PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF SWAP1 DUP2 AND SWAP2 AND EQ SWAP2 SWAP1 POP JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0x25 SWAP16 NUMBER DIV SLT LOG0 SWAP13 DUP4 0x49 PUSH23 0x1AB0914A530884D942868E34128F7BBA0C2EC9F6187400 0x29 ",
+				"sourceMap": "667:992:0:-;;;969:84;8:9:-1;5:2;;;30:1;27;20:12;5:2;969:84:0;;;;;;;;;;;;;1020:12;:26;;-1:-1:-1;;;;;1020:26:0;;;-1:-1:-1;;;;;;1020:26:0;;;;;;;;;667:992;;;;;;"
+			},
+			"deployedBytecode": {
+				"linkReferences": {},
+				"object": "0x608060405260043610603e5763ffffffff7c01000000000000000000000000000000000000000000000000000000006000350416639363470281146043575b600080fd5b348015604e57600080fd5b50607e60048035906024803573ffffffffffffffffffffffffffffffffffffffff16916044359182019101356092565b604080519115158252519081900360200190f35b505060005473ffffffffffffffffffffffffffffffffffffffff9081169116149190505600a165627a7a72305820259f430412a09c8349761ab0914a530884d942868e34128f7bba0c2ec9f618740029",
+				"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH1 0x3E JUMPI PUSH4 0xFFFFFFFF PUSH29 0x100000000000000000000000000000000000000000000000000000000 PUSH1 0x0 CALLDATALOAD DIV AND PUSH4 0x93634702 DUP2 EQ PUSH1 0x43 JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH1 0x4E JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH1 0x7E PUSH1 0x4 DUP1 CALLDATALOAD SWAP1 PUSH1 0x24 DUP1 CALLDATALOAD PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND SWAP2 PUSH1 0x44 CALLDATALOAD SWAP2 DUP3 ADD SWAP2 ADD CALLDATALOAD PUSH1 0x92 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 ISZERO ISZERO DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST POP POP PUSH1 0x0 SLOAD PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF SWAP1 DUP2 AND SWAP2 AND EQ SWAP2 SWAP1 POP JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0x25 SWAP16 NUMBER DIV SLT LOG0 SWAP13 DUP4 0x49 PUSH23 0x1AB0914A530884D942868E34128F7BBA0C2EC9F6187400 0x29 ",
+				"sourceMap": "667:992:0:-;;;;;;;;;;;;;;;;;;;;;;;1390:230;;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;1390:230:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;-1:-1:-1;;1547:12:0;1600;;;;;1583:29;;;;1390:230;-1:-1:-1;1390:230:0:o"
+			}
+		}
+	},
+	"sources": {
+		"2.0.0/examples/Validator/Validator.sol": {
+			"id": 0
+		},
+		"2.0.0/protocol/Exchange/interfaces/IValidator.sol": {
+			"id": 1
+		}
+	},
+	"sourceCodes": {
+		"2.0.0/examples/Validator/Validator.sol": "/*\n\n  Copyright 2018 ZeroEx Intl.\n\n  Licensed under the Apache License, Version 2.0 (the \"License\");\n  you may not use this file except in compliance with the License.\n  You may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\n  Unless required by applicable law or agreed to in writing, software\n  distributed under the License is distributed on an \"AS IS\" BASIS,\n  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n  See the License for the specific language governing permissions and\n  limitations under the License.\n\n*/\n\npragma solidity 0.4.24;\n\nimport \"../../protocol/Exchange/interfaces/IValidator.sol\";\n\n\ncontract Validator is \n    IValidator\n{\n\n    // The single valid signer for this wallet.\n    // solhint-disable-next-line var-name-mixedcase\n    address internal VALID_SIGNER;\n\n    /// @dev constructs a new `Validator` with a single valid signer.\n    /// @param validSigner The sole, valid signer.\n    constructor (address validSigner) public {\n        VALID_SIGNER = validSigner;\n    }\n\n    /// @dev Verifies that a signature is valid. `signer` must match `VALID_SIGNER`.\n    /// @param hash Message hash that is signed.\n    /// @param signerAddress Address that should have signed the given hash.\n    /// @param signature Proof of signing.\n    /// @return Validity of signature.\n    // solhint-disable no-unused-vars\n    function isValidSignature(\n        bytes32 hash,\n        address signerAddress,\n        bytes signature\n    )\n        external\n        view\n        returns (bool isValid)\n    {\n        return (signerAddress == VALID_SIGNER);\n    }\n    // solhint-enable no-unused-vars\n}\n",
+		"2.0.0/protocol/Exchange/interfaces/IValidator.sol": "/*\n\n  Copyright 2018 ZeroEx Intl.\n\n  Licensed under the Apache License, Version 2.0 (the \"License\");\n  you may not use this file except in compliance with the License.\n  You may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\n  Unless required by applicable law or agreed to in writing, software\n  distributed under the License is distributed on an \"AS IS\" BASIS,\n  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n  See the License for the specific language governing permissions and\n  limitations under the License.\n\n*/\n\npragma solidity 0.4.24;\n\n\ncontract IValidator {\n\n    /// @dev Verifies that a signature is valid.\n    /// @param hash Message hash that is signed.\n    /// @param signerAddress Address that should have signed the given hash.\n    /// @param signature Proof of signing.\n    /// @return Validity of order signature.\n    function isValidSignature(\n        bytes32 hash,\n        address signerAddress,\n        bytes signature\n    )\n        external\n        view\n        returns (bool isValid);\n}\n"
+	},
+	"sourceTreeHashHex": "0x0c2638dd4422383a85743676a5dee23af676beaaf84b534c400a24be6594572e",
+	"compiler": {
+		"name": "solc",
+		"version": "soljson-v0.4.24+commit.e67f0147.js",
+		"settings": {
+			"optimizer": {
+				"enabled": true,
+				"runs": 1000000
+			},
+			"outputSelection": {
+				"*": {
+					"*": [
+						"abi",
+						"evm.bytecode.object",
+						"evm.bytecode.sourceMap",
+						"evm.deployedBytecode.object",
+						"evm.deployedBytecode.sourceMap"
+					]
+				}
+			}
+		}
+	},
+	"networks": {}
+}
--- a/packages/migrations/artifacts/2.0.0/Wallet.json
+++ b/packages/migrations/artifacts/2.0.0/Wallet.json
--- a/packages/migrations/artifacts/2.0.0/Whitelist.json
+++ b/packages/migrations/artifacts/2.0.0/Whitelist.json
--- a/packages/migrations/package.json
+++ b/packages/migrations/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/migrations",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -38,30 +38,30 @@
    },
    "license": "Apache-2.0",
    "devDependencies": {
-        "@0xproject/abi-gen": "^1.0.0",
-        "@0xproject/monorepo-scripts": "^1.0.0",
-        "@0xproject/dev-utils": "^1.0.0",
-        "@0xproject/tslint-config": "^1.0.0",
-        "@0xproject/types": "^1.0.0-rc.1",
+        "@0xproject/abi-gen": "^1.0.1",
+        "@0xproject/dev-utils": "^1.0.1",
+        "@0xproject/monorepo-scripts": "^1.0.1",
+        "@0xproject/tslint-config": "^1.0.1",
+        "@0xproject/types": "^1.0.0",
        "@types/yargs": "^10.0.0",
        "copyfiles": "^1.2.0",
-        "yargs": "^10.0.3",
        "make-promises-safe": "^1.1.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "tslint": "5.11.0",
-        "typescript": "2.7.1"
+        "typescript": "2.7.1",
+        "yargs": "^10.0.3"
    },
    "dependencies": {
-        "@0xproject/base-contract": "^1.0.0",
-        "@0xproject/order-utils": "^1.0.0-rc.1",
-        "@0xproject/sol-compiler": "^1.0.0",
-        "@0xproject/subproviders": "^1.0.0",
-        "@0xproject/typescript-typings": "^1.0.0",
-        "@0xproject/utils": "^1.0.0",
-        "@0xproject/web3-wrapper": "^1.0.0",
+        "@0xproject/base-contract": "^1.0.1",
+        "@0xproject/order-utils": "^1.0.0",
+        "@0xproject/sol-compiler": "^1.0.1",
+        "@0xproject/subproviders": "^1.0.1",
+        "@0xproject/typescript-typings": "^1.0.1",
+        "@0xproject/utils": "^1.0.1",
+        "@0xproject/web3-wrapper": "^1.0.1",
        "@ledgerhq/hw-app-eth": "^4.3.0",
-        "ethereum-types": "^1.0.0",
+        "ethereum-types": "^1.0.1",
        "ethers": "3.0.22",
        "lodash": "^4.17.4"
    },
@@ -71,4 +71,4 @@
    "publishConfig": {
        "access": "public"
    }
-}
+}
--- a/packages/monorepo-scripts/CHANGELOG.json
+++ b/packages/monorepo-scripts/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "timestamp": 1532366696,
+        "version": "1.0.2",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ]
+    },
    {
        "timestamp": 1532357734,
        "version": "1.0.1",
--- a/packages/monorepo-scripts/CHANGELOG.md
+++ b/packages/monorepo-scripts/CHANGELOG.md
@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.

 CHANGELOG

+## v1.0.2 - _July 23, 2018_
+
+    * Dependencies updated
+
 ## v1.0.1 - _July 23, 2018_

    * Dependencies updated
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0xproject/monorepo-scripts",
-    "version": "1.0.0",
+    "version": "1.0.1",
    "engines": {
        "node": ">=6.12"
    },
@@ -47,8 +47,8 @@
        "chalk": "^2.3.0",
        "es6-promisify": "^5.0.0",
        "glob": "^7.1.2",
-        "lodash": "^4.17.4",
        "isomorphic-fetch": "2.2.1",
+        "lodash": "^4.17.4",
        "moment": "2.21.0",
        "opn": "^5.3.0",
        "promisify-child-process": "^1.0.5",
--- a/packages/monorepo-scripts/src/prepublish_checks.ts
+++ b/packages/monorepo-scripts/src/prepublish_checks.ts
@@ -50,7 +50,7 @@ async function checkGitTagsForNextVersionAndDeleteIfExistAsync(updatedPublicPack
 async function checkCurrentVersionMatchesLatestPublishedNPMPackageAsync(
    updatedPublicPackages: Package[],
 ): Promise<void> {
-    utils.log('Check package versions against npmjs.org...');
+    utils.log('Check package versions against npm registry...');
    const versionMismatches = [];
    for (const pkg of updatedPublicPackages) {
        const packageName = pkg.packageJson.name;
--- a/packages/monorepo-scripts/src/publish.ts
+++ b/packages/monorepo-scripts/src/publish.ts
@@ -42,7 +42,7 @@ const packageNameToWebsitePath: { [name: string]: string } = {
    const shouldIncludePrivate = false;
    const updatedPublicPackages = await utils.getUpdatedPackagesAsync(shouldIncludePrivate);

-    await confirmDocPagesRenderAsync(updatedPublicPackages);
+    // await confirmDocPagesRenderAsync(updatedPublicPackages);

    // Update CHANGELOGs
    const updatedPublicPackageNames = _.map(updatedPublicPackages, pkg => pkg.packageJson.name);
@@ -172,8 +172,7 @@ async function updateChangeLogsAsync(updatedPublicPackages: Package[]): Promise<
 async function lernaPublishAsync(packageToVersionChange: { [name: string]: string }): Promise<void> {
    // HACK: Lerna publish does not provide a way to specify multiple package versions via
    // flags so instead we need to interact with their interactive prompt interface.
-    const PACKAGE_REGISTRY = 'https://registry.npmjs.org/';
-    const child = spawn('lerna', ['publish', `--registry=${PACKAGE_REGISTRY}`], {
+    const child = spawn('lerna', ['publish', `--skip-git`], {
        cwd: constants.monorepoRootPath,
    });
    let shouldPrintOutput = false;
--- a/packages/monorepo-scripts/src/utils/npm_utils.ts
+++ b/packages/monorepo-scripts/src/utils/npm_utils.ts
@@ -1,9 +1,11 @@
+import * as fs from 'fs';
 import 'isomorphic-fetch';
 import * as _ from 'lodash';

 import { PackageRegistryJson } from '../types';

-const NPM_REGISTRY_BASE_URL = 'https://registry.npmjs.org';
+const lernaJson = JSON.parse(fs.readFileSync('lerna.json').toString());
+const NPM_REGISTRY_BASE_URL = lernaJson.registry;
 const SUCCESS_STATUS = 200;
 const NOT_FOUND_STATUS = 404;

@@ -15,7 +17,7 @@ export const npmUtils = {
        if (response.status === NOT_FOUND_STATUS) {
            return undefined;
        } else if (response.status !== SUCCESS_STATUS) {
-            throw new Error(`Request to ${url} failed. Check your internet connection and that npmjs.org is up.`);
+            throw new Error(`Request to ${url} failed. Check your internet connection and that npm registry is up.`);
        }
        const packageRegistryJson = await response.json();
        return packageRegistryJson;
--- a/packages/order-utils/CHANGELOG.json
+++ b/packages/order-utils/CHANGELOG.json
@@ -1,4 +1,22 @@
 [
+    {
+        "version": "1.0.1-rc.1",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1532366696
+    },
+    {
+        "version": "1.0.0",
+        "changes": [
+            {
+                "note": "Dependencies updated"
+            }
+        ],
+        "timestamp": 1532357734
+    },
    {
        "version": "1.0.0-rc.2",
        "changes": [
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Fabio Berger	58a149485b	Updated CHANGELOGS	2018-07-23 19:29:10 +02:00
Fabio Berger	39724292e3	Omit building website before publish	2018-07-23 19:28:27 +02:00
Fabio Berger	24b5aa0e82	Add new RC versions to changelog so that these packages are publised as RC's	2018-07-23 19:18:09 +02:00
Fabio Berger	3af2ef8439	Revert "Revert "Publish"" This reverts commit `a66ccaa1da`.	2018-07-23 19:11:48 +02:00
Fabio Berger	e2d027e252	Add skip-git for testing	2018-07-23 19:09:35 +02:00
Fabio Berger	bddcebfbb1	Allow registry to be configured in lerna.json	2018-07-23 19:09:24 +02:00
Amir Bandeali	a05b14e4d9	Merge pull request #847 from 0xProject/refactor/contracts/simplify-forwarder Refactor forwarding contract architecture, remove batch functions	2018-07-23 10:50:39 -05:00
Leonid Logvinov	a66ccaa1da	Revert "Publish" This reverts commit 3dc94051713e4a32796ce3b4ae4b70b527e24cfe.	2018-07-23 17:13:44 +02:00
Leonid Logvinov	f05a563802	Publish - 0x.js@1.0.0 - @0xproject/abi-gen@1.0.1 - @0xproject/assert@1.0.1 - @0xproject/base-contract@1.0.1 - @0xproject/connect@1.0.1 - @0xproject/contract-wrappers@1.0.0 - contracts@2.1.36 - @0xproject/dev-utils@1.0.1 - ethereum-types@1.0.1 - @0xproject/fill-scenarios@1.0.0 - @0xproject/json-schemas@1.0.0 - @0xproject/metacoin@0.0.11 - @0xproject/migrations@1.0.1 - @0xproject/monorepo-scripts@1.0.1 - @0xproject/order-utils@1.0.0 - @0xproject/order-watcher@1.0.0 - @0xproject/react-docs@1.0.1 - @0xproject/react-docs-example@0.0.16 - @0xproject/react-shared@1.0.1 - @0xproject/sol-compiler@1.0.1 - @0xproject/sol-cov@1.0.1 - @0xproject/sol-resolver@1.0.1 - @0xproject/sra-report@1.0.1 - @0xproject/subproviders@1.0.1 - @0xproject/testnet-faucets@1.0.37 - @0xproject/tslint-config@1.0.1 - @0xproject/types@1.0.0 - @0xproject/typescript-typings@1.0.1 - @0xproject/utils@1.0.1 - @0xproject/web3-wrapper@1.0.1 - @0xproject/website@0.0.40	2018-07-23 17:13:44 +02:00
Amir Bandeali	06396b8874	Remove ERC721 callback functions	2018-07-23 10:02:51 -05:00
Amir Bandeali	e5e68de2d7	Use != instead of > in loops, add sanity checks to market fill functions	2018-07-23 10:02:51 -05:00
Amir Bandeali	dcc0908617	Add more tests and fixes	2018-07-23 10:02:51 -05:00
Amir Bandeali	45d68285f1	Remove MConstants and MixinConstants for LibConstants	2018-07-23 10:02:51 -05:00
Amir Bandeali	e20f3a0f97	Remove redundant external call by reimplementing fillOrderNoThrow	2018-07-23 10:02:51 -05:00
Amir Bandeali	c5029e61e3	Remove orders length check	2018-07-23 10:02:51 -05:00
Amir Bandeali	e90ed01105	Add assertValidFillResults	2018-07-23 10:02:51 -05:00
Amir Bandeali	d8099d53fe	Update web3Wrapper CHANGELOG	2018-07-23 10:02:51 -05:00
Amir Bandeali	0a976a3fb8	Get actual gasPrice from transaction instead of setting default	2018-07-23 10:00:23 -05:00
Amir Bandeali	4636d5fbc2	Store orders length in varible before looping over orders	2018-07-23 10:00:23 -05:00
Amir Bandeali	3506ec1caa	Use transferFrom instead of safeTransferFrom	2018-07-23 10:00:23 -05:00
Amir Bandeali	1f0e819756	Fix minimal tests	2018-07-23 10:00:23 -05:00
Amir Bandeali	799ff2a5c3	Fix rounding error issues, use different logic when makerAsset is ZRX	2018-07-23 10:00:23 -05:00
Amir Bandeali	ec5f768f9b	Rename marketSellEth => marketSellWeth	2018-07-23 10:00:23 -05:00
Amir Bandeali	66ab010055	Update percentage constants	2018-07-23 10:00:23 -05:00
Amir Bandeali	6fb157488c	Update transferEthFeeAndRefund, add check to ERC721 transfer	2018-07-23 10:00:23 -05:00
Amir Bandeali	814518dd80	Refactor forwarding contract architecture, remove batch functions	2018-07-23 10:00:23 -05:00
Amir Bandeali	554b18a466	Merge pull request #906 from 0xProject/refactor/contracts/examples [contracts] Add `examples` directory	2018-07-23 10:00:06 -05:00
Amir Bandeali	c2ae9f62a4	Add tests to verify ZRX_ASSET_DATA	2018-07-23 09:34:47 -05:00
Amir Bandeali	4159a8fe6e	Add comments for deploying with constant ZRX_ASSET_DATA	2018-07-23 09:34:47 -05:00
Amir Bandeali	d8b44283a2	Move example contracts into new examples dir	2018-07-23 09:34:47 -05:00