Publish

- @0x/contracts-asset-proxy@2.2.8 - @0x/contracts-coordinator@2.0.13 - @0x/contracts-dev-utils@0.0.10 - @0x/contracts-erc1155@1.1.15 - @0x/contracts-erc20@2.2.14 - @0x/contracts-erc721@2.1.15 - @0x/contracts-exchange-forwarder@3.0.12 - @0x/contracts-exchange-libs@3.0.8 - @0x/contracts-exchange@2.1.14 - @0x/contracts-extensions@4.0.8 - @0x/contracts-multisig@3.1.14 - @0x/contracts-test-utils@3.1.16 - @0x/contracts-utils@3.2.4 - 0x.js@7.0.2 - @0x/abi-gen-wrappers@5.3.2 - @0x/abi-gen@4.2.1 - @0x/assert@2.1.6 - @0x/asset-buyer@6.1.14 - @0x/asset-swapper@2.0.0 - @0x/base-contract@5.4.0 - @0x/connect@5.0.19 - @0x/contract-addresses@3.2.0 - @0x/contract-artifacts@2.2.2 - @0x/contract-wrappers@12.1.0 - @0x/contracts-gen@1.0.15 - @0x/dev-utils@2.3.3 - ethereum-types@2.1.6 - @0x/fill-scenarios@3.0.19 - @0x/instant@1.0.31 - @0x/json-schemas@4.0.2 - @0x/migrations@4.3.2 - @0x/monorepo-scripts@1.0.37 - @0x/order-utils@8.4.0 - @0x/orderbook@0.0.2 - @0x/sol-compiler@3.1.15 - @0x/sol-coverage@3.0.12 - @0x/sol-doc@2.0.19 - @0x/sol-profiler@3.1.14 - @0x/sol-resolver@2.0.11 - @0x/sol-trace@2.0.20 - @0x/sol-tracing-utils@6.0.19 - @0x/sra-spec@2.0.17 - @0x/subproviders@5.0.4 - @0x/testnet-faucets@1.0.87 - @0x/types@2.4.3 - @0x/typescript-typings@4.3.0 - @0x/utils@4.5.2 - @0x/web3-wrapper@6.0.13
Updated CHANGELOGS & MD docs
2019-09-17 20:33:09 +02:00 · 2019-09-17 20:32:57 +02:00 · 2019-09-17 09:49:57 -07:00 · 2019-09-16 15:42:48 -07:00 · 2019-09-16 23:05:11 +01:00 · 2019-09-16 20:26:53 +01:00
1608 changed files with 108896 additions and 70929 deletions
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -4,48 +4,44 @@ jobs:
    build:
        resource_class: medium+
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        environment:
            CONTRACTS_COMMIT_HASH: '9ed05f5'
        working_directory: ~/repo
        steps:
            - checkout
            - run: echo 'export PATH=$HOME/CIRCLE_PROJECT_REPONAME/node_modules/.bin:$PATH' >> $BASH_ENV
-            - run:
+            # HACK(feuGeneA): commented out this hack as we're changing
-                  # HACK(albrow): Without this, yarn commands will sometimes
+            # from a circleci-maintained container to a different
-                  # fail with a "permission denied" error.
+            # container, and this hack may not apply anymore, as
-                  name: Set npm path
+            # suggested by the non-existance of `/home/circleci/.bashrc`
-                  command: npm set prefix=/home/circleci/npm && echo 'export PATH=$HOME/circleci/npm/bin:$PATH' >> /home/circleci/.bashrc
+            # when running the command below.
            # - run:
            #       # HACK(albrow): Without this, yarn commands will sometimes
            #       # fail with a "permission denied" error.
            #       name: Set npm path
            #       command: npm set prefix=/home/circleci/npm && echo 'export PATH=$HOME/circleci/npm/bin:$PATH' >> /home/circleci/.bashrc
            - run:
                  name: install-yarn
-                  command: npm install --global yarn@1.9.4
+                  command: npm install --global yarn@1.17.0
            - run:
                  name: yarn
                  command: yarn --frozen-lockfile --ignore-engines install || yarn --frozen-lockfile --ignore-engines install
            - setup_remote_docker
-            - run: yarn build:ci:no_website
+            - run: yarn build:ci
            - run: yarn build:ts
            - save_cache:
                  key: repo-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
                      - ~/repo
-            - save_cache:
+            - store_artifacts:
-                  key: python-contract-wrappers-{{ .Environment.CIRCLE_SHA1 }}
+                  path: ~/repo/packages/abi-gen/test-cli/output
-                  paths:
+            - store_artifacts:
-                      - ~/repo/packages/python-contract-wrappers/generated
+                  path: ~/repo/packages/abi-gen-wrappers/generated_docs
-    build-website:
+    test-contracts-ganache:
        resource_class: medium+
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        working_directory: ~/repo
        steps:
            - restore_cache:
                  keys:
                      - repo-{{ .Environment.CIRCLE_SHA1 }}
            - run: cd packages/website && yarn build:prod
    test-contracts-ganache:
        docker:
            - image: circleci/node:9-browsers
        working_directory: ~/repo
        steps:
            - restore_cache:
@@ -54,7 +50,7 @@ jobs:
            - run: yarn wsrun test:circleci @0x/contracts-multisig @0x/contracts-utils @0x/contracts-exchange-libs @0x/contracts-erc20 @0x/contracts-erc721 @0x/contracts-erc1155 @0x/contracts-extensions @0x/contracts-asset-proxy @0x/contracts-exchange @0x/contracts-exchange-forwarder @0x/contracts-coordinator @0x/contracts-dev-utils
    test-contracts-geth:
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
            - image: 0xorg/devnet
        working_directory: ~/repo
        steps:
@@ -67,7 +63,7 @@ jobs:
    test-publish:
        resource_class: medium+
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
            - image: 0xorg/verdaccio
        working_directory: ~/repo
        steps:
@@ -77,7 +73,7 @@ jobs:
            - run: yarn test:publish:circleci
    test-doc-generation:
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        working_directory: ~/repo
        steps:
            - restore_cache:
@@ -86,7 +82,7 @@ jobs:
            - run: yarn test:generate_docs:circleci
    test-rest:
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        working_directory: ~/repo
        steps:
            - restore_cache:
@@ -102,9 +98,7 @@ jobs:
            - run: yarn wsrun test:circleci @0x/contract-wrappers
            - run: yarn wsrun test:circleci @0x/dev-utils
            - run: yarn wsrun test:circleci @0x/json-schemas
            - run: yarn wsrun test:circleci @0x/metacoin
            - run: yarn wsrun test:circleci @0x/order-utils
            - run: yarn wsrun test:circleci @0x/order-watcher
            - run: yarn wsrun test:circleci @0x/sol-compiler
            - run: yarn wsrun test:circleci @0x/sol-tracing-utils
            - run: yarn wsrun test:circleci @0x/sol-doc
@@ -144,18 +138,10 @@ jobs:
                  key: coverage-json-schemas-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
                      - ~/repo/packages/json-schemas/coverage/lcov.info
            - save_cache:
                  key: coverage-metacoin-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
                      - ~/repo/packages/metacoin/coverage/lcov.info
            - save_cache:
                  key: coverage-order-utils-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
                      - ~/repo/packages/order-utils/coverage/lcov.info
            - save_cache:
                  key: coverage-order-watcher-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
                      - ~/repo/packages/order-watcher/coverage/lcov.info
            - save_cache:
                  key: coverage-sol-compiler-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
@@ -179,22 +165,22 @@ jobs:
    test-python:
        working_directory: ~/repo
        docker:
-            - image: circleci/python
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
            - image: 0xorg/ganache-cli:2.2.2
-            - image: 0xorg/launch-kit-ci
+            - image: 0xorg/launch-kit-backend:74bcc39
              environment:
                  RPC_URL: http://localhost:8545
                  NETWORK_ID: 50
                  WHITELIST_ALL_TOKENS: True
-              command: bash -c "until curl -sfd'{\"method\":\"net_listening\"}' http://localhost:8545 | grep true; do continue; done; forever ts/lib/index.js"
+              command: |
                  sh -c "until printf 'POST /\r\nContent-Length: 26\r\n\r\n{\"method\":\"net_listening\"}' | nc localhost 8545 | grep true; do continue; done; node_modules/.bin/forever ts/lib/index.js"
        steps:
            - checkout
            - run: sudo chown -R circleci:circleci /usr/local/bin
            - run: sudo chown -R circleci:circleci /usr/local/lib/python3.7
            - restore_cache:
                  key: installed-py-{{ .Branch }}-{{ .Environment.CIRCLE_SHA1 }}
            - restore_cache:
-                  key: python-contract-wrappers-{{ .Environment.CIRCLE_SHA1 }}
+                  keys:
                      - repo-{{ .Environment.CIRCLE_SHA1 }}
            - run:
                  command: |
                      cd python-packages
@@ -209,7 +195,8 @@ jobs:
            - run:
                  command: |
                      cd python-packages
-                      ./cmd_pkgs_in_dep_order.py coverage run setup.py test
+                      ./parallel_without_sra_client coverage run setup.py test
                      ./build_docs
            - save_cache:
                  key: coverage-python-contract-addresses-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
@@ -234,14 +221,28 @@ jobs:
                  key: coverage-python-sra-client-{{ .Environment.CIRCLE_SHA1 }}
                  paths:
                      - ~/repo/python-packages/sra_client/.coverage
            - store_artifacts:
                  path: ~/repo/python-packages/contract_wrappers/src/zero_ex/contract_wrappers/*/__init__.py
            - store_artifacts:
                  path: ~/repo/python-packages/contract_addresses/build
            - store_artifacts:
                  path: ~/repo/python-packages/contract_artifacts/build
            - store_artifacts:
                  path: ~/repo/python-packages/contract_wrappers/build
            - store_artifacts:
                  path: ~/repo/python-packages/json_schemas/build
            - store_artifacts:
                  path: ~/repo/python-packages/middlewares/build
            - store_artifacts:
                  path: ~/repo/python-packages/order_utils/build
            - store_artifacts:
                  path: ~/repo/python-packages/sra_client/build
    test-rest-python:
        working_directory: ~/repo
        docker:
-            - image: circleci/python
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        steps:
            - checkout
            - run: sudo chown -R circleci:circleci /usr/local/bin
            - run: sudo chown -R circleci:circleci /usr/local/lib/python3.7
            - restore_cache:
                  key: installed-py-{{ .Branch }}-{{ .Environment.CIRCLE_SHA1 }}
            - run:
@@ -265,15 +266,14 @@ jobs:
    static-tests-python:
        working_directory: ~/repo
        docker:
-            - image: circleci/python
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        steps:
            - checkout
            - run: sudo chown -R circleci:circleci /usr/local/bin
            - run: sudo chown -R circleci:circleci /usr/local/lib/python3.7
            - restore_cache:
                  key: installed-py-{{ .Branch }}-{{ .Environment.CIRCLE_SHA1 }}
            - restore_cache:
-                  key: python-contract-wrappers-{{ .Environment.CIRCLE_SHA1 }}
+                  keys:
                      - repo-{{ .Environment.CIRCLE_SHA1 }}
            - run:
                  command: |
                      python -m ensurepip
@@ -282,9 +282,10 @@ jobs:
                      ./install
                      ./lint
    static-tests:
        resource_class: large
        working_directory: ~/repo
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        steps:
            - restore_cache:
                  keys:
@@ -292,11 +293,12 @@ jobs:
            - run: yarn lerna run lint
            - run: yarn prettier:ci
            - run: yarn deps_versions:ci
            - run: yarn diff_md_docs:ci
            - run: cd packages/0x.js && yarn build:umd:prod
            - run: yarn bundlewatch
    submit-coverage:
        docker:
-            - image: circleci/node:9-browsers
+            - image: nikolaik/python-nodejs:python3.7-nodejs8
        working_directory: ~/repo
        steps:
            - restore_cache:
@@ -326,15 +328,9 @@ jobs:
            - restore_cache:
                  keys:
                      - coverage-json-schemas-{{ .Environment.CIRCLE_SHA1 }}
            - restore_cache:
                  keys:
                      - coverage-metacoin-{{ .Environment.CIRCLE_SHA1 }}
            - restore_cache:
                  keys:
                      - coverage-order-utils-{{ .Environment.CIRCLE_SHA1 }}
            - restore_cache:
                  keys:
                      - coverage-order-watcher-{{ .Environment.CIRCLE_SHA1 }}
            - restore_cache:
                  keys:
                      - coverage-sol-compiler-{{ .Environment.CIRCLE_SHA1 }}
@@ -377,9 +373,6 @@ workflows:
    main:
        jobs:
            - build
            - build-website:
                  requires:
                      - build
            - test-contracts-ganache:
                  requires:
                      - build
--- a/.gitattributes
+++ b/.gitattributes
@@ -3,5 +3,6 @@
 # Automatically collapse generated files in GitHub.
 *.svg linguist-generated=true
 packages/contract-artifacts/artifacts/*json linguist-generated=true
-packages/abi-gen-wrappers/src/generated-wrappers/*.ts liguist-generated=true
+packages/abi-gen-wrappers/src/generated-wrappers/*.ts linguist-generated=true
 packages/contract-wrappers/src/generated-wrappers/*.ts linguist-generated=true
--- a/.github/autolabeler.yml
+++ b/.github/autolabeler.yml
@@ -13,7 +13,6 @@ contracts: ['contracts']
@0x/instant: ['packages/instant']
@0x/abi-gen-templates: ['packages/abi-gen-templates']
@0x/abi-gen: ['packages/abi-gen']
@0x/website: ['packages/website']
@0x/sol-coverage: ['packages/sol-coverage']
@0x/sol-profiler: ['packages/sol-profiler']
@0x/sol-trace: ['packages/sol-trace']
@@ -21,16 +20,12 @@ contracts: ['contracts']
@0x/utils: ['packages/utils']
@0x/tslint-config: ['packages/tslint-config']
@0x/asset-buyer: ['packages/asset-buyer']
@0x/order-watcher: ['packages/order-watcher']
@0x/react-docs: ['packages/react-docs']
@0x/order-utils: ['packages/order-utils']
@0x/react-shared: ['packages/react-shared']
@0x/assert: ['packages/assert']
@0x/base-contract: ['packages/base-contract']
@0x/typescript-typings: ['packages/typescript-typings']
 0x.js: ['packages/0x.js']
@0x/abi-gen-wrappers: ['packages/abi-gen-wrappers']
@0x/metacoin: ['packages/metacoin']
@0x/contract-artifacts: ['packages/contract-artifacts']
@0x/dev-utils: ['packages/dev-utils']
@0x/contract-wrappers: ['packages/contract-wrappers']
@@ -38,6 +33,5 @@ contracts: ['contracts']
@0x/ethereum-types: ['ethereum-types']
@0x/connect: ['packages/connect']
@0x/fill-scenarios: ['packages/fill-scenarios']
@0x/dev-tools-pages: ['packages/dev-tools-pages']
@0x/testnet-faucets: ['packages/testnet-faucets']
@0x/monorepo-scripts: ['packages/monorepo-scripts']
--- a/.gitignore
+++ b/.gitignore
@@ -40,9 +40,12 @@ build/Release
 node_modules/
 jspm_packages/
-# Typescript v1 declaration files
+# TypeScript v1 declaration files
 typings/
 # NVM config
 .nvmrc
 # Optional npm cache directory
 .npm
 .npmrc
@@ -75,10 +78,6 @@ TODO.md
 # VSCode file
 .vscode
 packages/website/public/bundle*
 packages/dev-tools-pages/public/bundle*
 packages/react-docs/example/public/bundle*
 # server cli
 packages/testnet-faucets/server/
@@ -96,11 +95,9 @@ contracts/extensions/generated-artifacts/
 contracts/exchange-forwarder/generated-artifacts/
 contracts/dev-utils/generated-artifacts/
 packages/sol-tracing-utils/test/fixtures/artifacts/
 packages/metacoin/artifacts/
 python-packages/contract_artifacts/src/zero_ex/contract_artifacts/artifacts/
 # generated contract wrappers
 packages/abi-gen-wrappers/src/generated-wrappers/
 packages/python-contract-wrappers/generated/
 contracts/coordinator/generated-wrappers/
 contracts/exchange/generated-wrappers/
@@ -114,17 +111,30 @@ contracts/erc1155/generated-wrappers/
 contracts/extensions/generated-wrappers/
 contracts/exchange-forwarder/generated-wrappers/
 contracts/dev-utils/generated-wrappers/
-packages/metacoin/src/contract_wrappers
+python-packages/contract_wrappers/src/zero_ex/contract_wrappers/erc20_token/__init__.py
-
+python-packages/contract_wrappers/src/zero_ex/contract_wrappers/exchange/__init__.py
-# cli test output
+python-packages/contract_wrappers/src/zero_ex/contract_wrappers/asset_proxy_owner/__init__.py
-packages/abi-gen/test-cli/output
+python-packages/contract_wrappers/src/zero_ex/contract_wrappers/coordinator/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/coordinator_registry/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/dummy_erc20_token/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/dummy_erc721_token/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/dutch_auction/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/erc20_proxy/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/erc721_proxy/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/erc721_token/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/eth_balance_checker/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/forwarder/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/i_asset_proxy/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/i_validator/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/i_wallet/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/multi_asset_proxy/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/order_validator/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/weth9/__init__.py
 python-packages/contract_wrappers/src/zero_ex/contract_wrappers/zrx_token/__init__.py
 # solc-bin in sol-compiler
 packages/sol-compiler/solc_bin/
 # Monorepo scripts
 packages/*/scripts/
 # python stuff
 .eggs
 .mypy_cache
@@ -134,3 +144,11 @@ python-packages/*/dist
 __pycache__
 python-packages/*/src/*.egg-info
 python-packages/*/.coverage
 # python keeps package-local copies of json schemas
 python-packages/json_schemas/src/zero_ex/json_schemas/schemas
 # Doc README copy
 packages/*/docs/README.md
 .DS_Store
--- a/.prettierignore
+++ b/.prettierignore
@@ -27,13 +27,14 @@ lib
 /packages/abi-gen/test-cli/output
 /packages/json-schemas/schemas
 /python-packages/json_schemas/src/zero_ex/json_schemas/schemas
 /packages/metacoin/src/contract_wrappers
 /packages/metacoin/artifacts
 /packages/sra-spec/public/
 /packages/dev-tools-pages/ts/**/data.json
 package.json
 scripts/postpublish_utils.js
 packages/sol-coverage/test/fixtures/artifacts
 .pytest_cache
 .mypy_cache
 .tox
 packages/abi-gen/test-cli/fixtures/artifacts/AbiGenDummy.json
 packages/abi-gen/test-cli/fixtures/artifacts/LibDummy.json
 packages/abi-gen/test-cli/fixtures/artifacts/TestLibDummy.json
 packages/*/docs
--- a/2
+++ b/2
@@ -7,7 +7,6 @@
 # Website
 packages/asset-buyer/  @BMillman19 @fragosti @steveklebanoff
 packages/instant/  @BMillman19 @fragosti @steveklebanoff
 packages/website/  @BMillman19 @fragosti @fabioberger @steveklebanoff
 # Dev tools & setup
 .circleci/ @LogvinovLeon
@@ -20,7 +19,6 @@ packages/contract-artifacts/ @albrow
 packages/dev-utils/ @LogvinovLeon @fabioberger
 packages/devnet/ @albrow
 packages/ethereum-types/ @LogvinovLeon
 packages/metacoin/ @LogvinovLeon
 packages/monorepo-scripts/ @fabioberger
 packages/order-utils/ @fabioberger @LogvinovLeon 
 packages/python-contract-wrappers/ @feuGeneA
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -29,9 +29,9 @@ ALL PRs should be opened against `development`.
 Branch names should be prefixed with `fix`, `feature` or `refactor`.
-   e.g `fix/broken-wiki-link`
+-   e.g `fix/missing-import`
 -   If the PR only edits a single package, add it's name too
-    -   e.g `fix/website/broken-wiki-link`
+    -   e.g `fix/subproviders/missing-import`
 ### CHANGELOGs
@@ -55,7 +55,7 @@ If an entry without a `timestamp` already exists, this means other changes have
 ### Development Tooling
-We strongly recommend you use the [VSCode](https://code.visualstudio.com/) text editor since most of our code is written in Typescript and it offers amazing support for the language.
+We strongly recommend you use the [VSCode](https://code.visualstudio.com/) text editor since most of our code is written in TypeScript and it offers amazing support for the language.
 #### Linter
@@ -89,7 +89,7 @@ A few of our coding conventions are not yet enforced by the linter/auto-formatte
 1.  Do not import from a project's `index.ts` (e.g import { Token } from '../src';). Always import from the source file itself.
 1.  Generic error variables should be named `err` instead of `e` or `error`.
 1.  If you _must_ cast a variable to any - try to type it back as fast as possible. (e.g., `const cw = ((zeroEx as any)._contractWrappers as ContractWrappers);`). This ensures subsequent code is type-safe.
-1.  Our enum conventions coincide with the recommended Typescript conventions, using capitalized keys, and all-caps snake-case values. Eg `GetStats = 'GET_STATS'`
+1.  Our enum conventions coincide with the recommended TypeScript conventions, using capitalized keys, and all-caps snake-case values. Eg `GetStats = 'GET_STATS'`
 1.  All public, exported methods/functions/classes must have associated Javadoc-style comments.
 ### Fix `submit-coverage` CI failure
--- a/README.md
+++ b/README.md
@@ -6,21 +6,16 @@
 This repository is a monorepo including the 0x protocol smart contracts and numerous developer tools. Each public sub-package is independently published to NPM.
-If you're developing on 0x now or are interested in using 0x infrastructure in the future, please join our [developer mailing list][dev-mailing-list-url] for updates.
+[website-url]: https://0x.org
 [website-url]: https://0xproject.com
 [whitepaper-url]: https://0xproject.com/pdfs/0x_white_paper.pdf
 [dev-mailing-list-url]: http://eepurl.com/dx4cPf
 [![CircleCI](https://circleci.com/gh/0xProject/0x-monorepo.svg?style=svg&circle-token=61bf7cd8c9b4e11b132089dfcffdd1be277d1e0c)](https://circleci.com/gh/0xProject/0x-monorepo)
 [![Coverage Status](https://coveralls.io/repos/github/0xProject/0x-monorepo/badge.svg?branch=development)](https://coveralls.io/github/0xProject/0x-monorepo?branch=development)
-[![Discord](https://img.shields.io/badge/chat-rocket.chat-yellow.svg?style=flat)](https://chat.0xproject.com)
+[![Discord](https://img.shields.io/badge/chat-discord.chat-yellow.svg?style=flat)](https://discordapp.com/invite/d3FTX3M)
 [![Join the chat at https://gitter.im/0xProject/Lobby](https://badges.gitter.im/0xProject/Lobby.svg)](https://gitter.im/0xProject/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 ## Packages
-Visit our [developer portal](https://0xproject.com/docs/order-utils) for a comprehensive list of core & community maintained packages. All packages maintained with this monorepo are listed below.
+Visit our [developer portal](https://0x.org/docs/tools/order-utils) for a comprehensive list of core & community maintained packages. All packages maintained with this monorepo are listed below.
 ### Python Packages
@@ -28,6 +23,7 @@ Visit our [developer portal](https://0xproject.com/docs/order-utils) for a compr
 | -------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
 | [`0x-contract-addresses`](/python-packages/contract_addresses) | [![PyPI](https://img.shields.io/pypi/v/0x-contract-addresses.svg)](https://pypi.org/project/0x-contract-addresses/) | A tiny utility library for getting known deployed contract addresses for a particular network     |
 | [`0x-contract-artifacts`](/python-packages/contract_artifacts) | [![PyPI](https://img.shields.io/pypi/v/0x-contract-artifacts.svg)](https://pypi.org/project/0x-contract-artifacts/) | 0x smart contract compilation artifacts                                                           |
 | [`0x-contract-wrappers`](/python-packages/contract_wrappers)   | [![PyPI](https://img.shields.io/pypi/v/0x-contract-wrappers.svg)](https://pypi.org/project/0x-contract-wrappers/)   | 0x smart contract wrappers                                                                        |
 | [`0x-json-schemas`](/python-packages/json_schemas)             | [![PyPI](https://img.shields.io/pypi/v/0x-json-schemas.svg)](https://pypi.org/project/0x-json-schemas/)             | 0x-related JSON schemas                                                                           |
 | [`0x-order-utils`](/python-packages/order_utils)               | [![PyPI](https://img.shields.io/pypi/v/0x-order-utils.svg)](https://pypi.org/project/0x-order-utils/)               | A set of utilities for generating, parsing, signing and validating 0x orders                      |
 | [`0x-sra-client`](/python-packages/sra_client)                 | [![PyPI](https://img.shields.io/pypi/v/0x-sra-client.svg)](https://pypi.org/project/0x-sra-client/)                 | A Python client for interacting with servers conforming to the Standard Relayer API specification |
@@ -47,12 +43,12 @@ These packages are all under development. See [/contracts/README.md](/contracts/
 | [`@0x/contracts-exchange-libs`](/contracts/exchange-libs)           | [![npm](https://img.shields.io/npm/v/@0x/contracts-exchange-libs.svg)](https://www.npmjs.com/package/@0x/contracts-exchange-libs)           | Protocol specific libraries used within the [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange) contract                                                                                 |
 | [`@0x/contracts-extensions`](/contracts/extensions)                 | [![npm](https://img.shields.io/npm/v/@0x/contracts-extensions.svg)](https://www.npmjs.com/package/@0x/contracts-extensions)                 | Contracts that interact with and extend the functionality of the core protocol                                                                                                                                                                        |
 | [`@0x/contracts-multisig`](/contracts/multisig)                     | [![npm](https://img.shields.io/npm/v/@0x/contracts-multisig.svg)](https://www.npmjs.com/package/@0x/contracts-multisig)                     | Various implementations of multisignature wallets, including the [`AssetProxyOwner`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxyowner) contract that has permissions to upgrade the protocol |
-| [`@0x/contracts-test-utils`](/contracts/test-utils)                 | [![npm](https://img.shields.io/npm/v/@0x/contracts-test-utils.svg)](https://www.npmjs.com/package/@0x/contracts-test-utils)                 | Typescript/Javascript shared utilities used for testing contracts                                                                                                                                                                                     |
+| [`@0x/contracts-test-utils`](/contracts/test-utils)                 | [![npm](https://img.shields.io/npm/v/@0x/contracts-test-utils.svg)](https://www.npmjs.com/package/@0x/contracts-test-utils)                 | TypeScript/Javascript shared utilities used for testing contracts                                                                                                                                                                                     |
 | [`@0x/contracts-utils`](/contracts/utils)                           | [![npm](https://img.shields.io/npm/v/@0x/contracts-utils.svg)](https://www.npmjs.com/package/@0x/contracts-utils)                           | Generic libraries and utilities used throughout all of the contracts                                                                                                                                                                                  |
 | [`@0x/contracts-coordinator`](/contracts/coordinator)               | [![npm](https://img.shields.io/npm/v/@0x/contracts-coordinator.svg)](https://www.npmjs.com/package/@0x/contracts-coordinator)               | A contract that allows users to execute 0x transactions with permission from a Coordinator                                                                                                                                                            |
 | [`@0x/contracts-dev-utils`](/contracts/dev-utils)                   | [![npm](https://img.shields.io/npm/v/@0x/contracts-dev-utils.svg)](https://www.npmjs.com/package/@0x/contracts-dev-utils)                   | A contract contains utility functions for developers (such as validating many orders using a single eth_call)                                                                                                                                         |
-### Typescript/Javascript Packages
+### TypeScript/Javascript Packages
 #### 0x-specific packages
@@ -62,14 +58,14 @@ These packages are all under development. See [/contracts/README.md](/contracts/
 | [`@0x/contract-addresses`](/packages/contract-addresses) | [![npm](https://img.shields.io/npm/v/@0x/contract-addresses.svg)](https://www.npmjs.com/package/@0x/contract-addresses) | A tiny utility library for getting known deployed contract addresses for a particular network.    |
 | [`@0x/contract-wrappers`](/packages/contract-wrappers)   | [![npm](https://img.shields.io/npm/v/@0x/contract-wrappers.svg)](https://www.npmjs.com/package/@0x/contract-wrappers)   | JS/TS wrappers for interacting with the 0x smart contracts                                        |
 | [`@0x/order-utils`](/packages/order-utils)               | [![npm](https://img.shields.io/npm/v/@0x/order-utils.svg)](https://www.npmjs.com/package/@0x/order-utils)               | A set of utilities for generating, parsing, signing and validating 0x orders                      |
-| [`@0x/json-schemas`](/packages/json-schemas)             | [![npm](https://img.shields.io/npm/v/@0x/json-schemas.svg)](https://www.npmjs.com/package/@0x/json-schemas)             | 0x-related JSON schemas                                                                           |
+| [`@0x/json-schemas`](/packages/json-schemas)             | [![npm](https://img.shields.io/npm/v/@0x/json-schemas.svg)](https://www.npmjs.com/package/@0x/json-schemas)             | 0x-related JSON schemas                                                                           |  |
 | [`@0x/order-watcher`](/packages/order-watcher)           | [![npm](https://img.shields.io/npm/v/@0x/order-watcher.svg)](https://www.npmjs.com/package/@0x/order-watcher)           | An order watcher daemon that watches for order validity                                           |
 | [`@0x/migrations`](/packages/migrations)                 | [![npm](https://img.shields.io/npm/v/@0x/migrations.svg)](https://www.npmjs.com/package/@0x/migrations)                 | Migration tool for deploying 0x smart contracts on private testnets                               |
 | [`@0x/contract-artifacts`](/packages/contract-artifacts) | [![npm](https://img.shields.io/npm/v/@0x/contract-artifacts.svg)](https://www.npmjs.com/package/@0x/contract-artifacts) | 0x smart contract compilation artifacts                                                           |
 | [`@0x/abi-gen-wrappers`](/packages/abi-gen-wrappers)     | [![npm](https://img.shields.io/npm/v/@0x/abi-gen-wrappers.svg)](https://www.npmjs.com/package/@0x/abi-gen-wrappers)     | Low-level 0x smart contract wrappers generated using `@0x/abi-gen`                                |
 | [`@0x/sra-spec`](/packages/sra-spec)                     | [![npm](https://img.shields.io/npm/v/@0x/sra-spec.svg)](https://www.npmjs.com/package/@0x/sra-spec)                     | OpenAPI specification for the Standard Relayer API                                                |
 | [`@0x/connect`](/packages/connect)                       | [![npm](https://img.shields.io/npm/v/@0x/connect.svg)](https://www.npmjs.com/package/@0x/connect)                       | An HTTP/WS client for interacting with the Standard Relayer API                                   |
 | [`@0x/asset-buyer`](/packages/asset-buyer)               | [![npm](https://img.shields.io/npm/v/@0x/asset-buyer.svg)](https://www.npmjs.com/package/@0x/asset-buyer)               | Convenience package for discovering and buying assets with Ether                                  |
 | [`@0x/asset-swapper`](/packages/asset-swapper)           | [![npm](https://img.shields.io/npm/v/@0x/asset-swapper.svg)](https://www.npmjs.com/package/@0x/asset-swapper)           | Convenience package for discovering and performing swaps for any ERC20 Assets                     |
 #### Ethereum tooling
@@ -86,19 +82,17 @@ These packages are all under development. See [/contracts/README.md](/contracts/
 #### Utilities
-| Package                                                  | Version                                                                                                                 | Description                                                                  |
+| Package                                                  | Version                                                                                                                 | Description                                                     |
-| -------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- |
+| -------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------- |
-| [`@0x/abi-gen`](/packages/abi-gen)                       | [![npm](https://img.shields.io/npm/v/@0x/abi-gen.svg)](https://www.npmjs.com/package/@0x/abi-gen)                       | Tool to generate TS wrappers from smart contract ABIs                        |
+| [`@0x/abi-gen`](/packages/abi-gen)                       | [![npm](https://img.shields.io/npm/v/@0x/abi-gen.svg)](https://www.npmjs.com/package/@0x/abi-gen)                       | Tool to generate TS wrappers from smart contract ABIs           |
-| [`@0x/tslint-config`](/packages/tslint-config)           | [![npm](https://img.shields.io/npm/v/@0x/tslint-config.svg)](https://www.npmjs.com/package/@0x/tslint-config)           | Custom TSLint rules used by the 0x core team                                 |
+| [`@0x/tslint-config`](/packages/tslint-config)           | [![npm](https://img.shields.io/npm/v/@0x/tslint-config.svg)](https://www.npmjs.com/package/@0x/tslint-config)           | Custom TSLint rules used by the 0x core team                    |
-| [`@0x/types`](/packages/types)                           | [![npm](https://img.shields.io/npm/v/@0x/types.svg)](https://www.npmjs.com/package/@0x/types)                           | Shared type declarations                                                     |
+| [`@0x/types`](/packages/types)                           | [![npm](https://img.shields.io/npm/v/@0x/types.svg)](https://www.npmjs.com/package/@0x/types)                           | Shared type declarations                                        |
-| [`@0x/typescript-typings`](/packages/typescript-typings) | [![npm](https://img.shields.io/npm/v/@0x/typescript-typings.svg)](https://www.npmjs.com/package/@0x/typescript-typings) | Repository of types for external packages                                    |
+| [`@0x/typescript-typings`](/packages/typescript-typings) | [![npm](https://img.shields.io/npm/v/@0x/typescript-typings.svg)](https://www.npmjs.com/package/@0x/typescript-typings) | Repository of types for external packages                       |
-| [`@0x/utils`](/packages/utils)                           | [![npm](https://img.shields.io/npm/v/@0x/utils.svg)](https://www.npmjs.com/package/@0x/utils)                           | Shared utilities                                                             |
+| [`@0x/utils`](/packages/utils)                           | [![npm](https://img.shields.io/npm/v/@0x/utils.svg)](https://www.npmjs.com/package/@0x/utils)                           | Shared utilities                                                |
-| [`@0x/react-docs`](/packages/react-docs)                 | [![npm](https://img.shields.io/npm/v/@0x/react-docs.svg)](https://www.npmjs.com/package/@0x/react-docs)                 | React documentation component for rendering TypeDoc & sol-doc generated JSON |
+| [`@0x/assert`](/packages/assert)                         | [![npm](https://img.shields.io/npm/v/@0x/assert.svg)](https://www.npmjs.com/package/@0x/assert)                         | Type and schema assertions used by our packages                 |
-| [`@0x/react-shared`](/packages/react-shared)             | [![npm](https://img.shields.io/npm/v/@0x/react-shared.svg)](https://www.npmjs.com/package/@0x/react-shared)             | 0x shared react components                                                   |
+| [`@0x/base-contract`](/packages/base-contract)           | [![npm](https://img.shields.io/npm/v/@0x/base-contract.svg)](https://www.npmjs.com/package/@0x/base-contract)           | BaseContract used by auto-generated `abi-gen` wrapper contracts |
-| [`@0x/assert`](/packages/assert)                         | [![npm](https://img.shields.io/npm/v/@0x/assert.svg)](https://www.npmjs.com/package/@0x/assert)                         | Type and schema assertions used by our packages                              |
+| [`@0x/dev-utils`](/packages/dev-utils)                   | [![npm](https://img.shields.io/npm/v/@0x/dev-utils.svg)](https://www.npmjs.com/package/@0x/dev-utils)                   | Dev utils to be shared across 0x packages                       |
-| [`@0x/base-contract`](/packages/base-contract)           | [![npm](https://img.shields.io/npm/v/@0x/base-contract.svg)](https://www.npmjs.com/package/@0x/base-contract)           | BaseContract used by auto-generated `abi-gen` wrapper contracts              |
+| [`@0x/fill-scenarios`](/packages/fill-scenarios)         | [![npm](https://img.shields.io/npm/v/@0x/fill-scenarios.svg)](https://www.npmjs.com/package/@0x/fill-scenarios)         | 0x order fill scenario generator                                |
 | [`@0x/dev-utils`](/packages/dev-utils)                   | [![npm](https://img.shields.io/npm/v/@0x/dev-utils.svg)](https://www.npmjs.com/package/@0x/dev-utils)                   | Dev utils to be shared across 0x packages                                    |
 | [`@0x/fill-scenarios`](/packages/fill-scenarios)         | [![npm](https://img.shields.io/npm/v/@0x/fill-scenarios.svg)](https://www.npmjs.com/package/@0x/fill-scenarios)         | 0x order fill scenario generator                                             |
 #### Private Packages
@@ -106,11 +100,10 @@ These packages are all under development. See [/contracts/README.md](/contracts/
 | -------------------------------------------------- | -------------------------------------------------------------------------------- |
 | [`@0x/instant`](/packages/instant)                 | A free and flexible way to offer simple crypto purchasing in any app or website. |
 | [`@0x/testnet-faucets`](/packages/testnet-faucets) | A faucet micro-service that dispenses test ERC20 tokens or Ether                 |
 | [`@0x/website`](/packages/website)                 | 0x website                                                                       |
 ## Usage
-Node version >= 6.12 is required.
+Node version 6.x or 8.x is required.
 Most of the packages require additional typings for external dependencies.
 You can include those by prepending the `@0x/typescript-typings` package to your [`typeRoots`](http://www.typescriptlang.org/docs/handbook/tsconfig-json.html) config.
@@ -139,6 +132,8 @@ Then install dependencies
 yarn install
 ```
 You will also need to have Python 3 installed, in order to build and run the tests of `abi-gen`'s command-line interface, which is integrated with the yarn build, yarn test, and yarn lint commands described below. More specifically, your local pip should resolve to the Python 3 version of pip, not a Python 2.x version.
 ### Build
 To build all packages:
--- a/contracts/asset-proxy/CHANGELOG.json
+++ b/contracts/asset-proxy/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "2.2.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "2.2.7",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "2.2.6",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "2.2.5",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "2.2.4",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564607468
    },
    {
        "timestamp": 1563957393,
        "version": "2.2.3",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "2.2.2",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "2.2.1",
--- a/contracts/asset-proxy/CHANGELOG.md
+++ b/contracts/asset-proxy/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v2.2.8 - _September 17, 2019_
    * Dependencies updated
 ## v2.2.7 - _September 3, 2019_
    * Dependencies updated
 ## v2.2.6 - _August 22, 2019_
    * Dependencies updated
 ## v2.2.5 - _August 8, 2019_
    * Dependencies updated
 ## v2.2.4 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v2.2.3 - _July 24, 2019_
    * Dependencies updated
 ## v2.2.2 - _July 15, 2019_
    * Dependencies updated
 ## v2.2.1 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/asset-proxy/README.md
+++ b/contracts/asset-proxy/README.md
@@ -1,6 +1,6 @@
 ## AssetProxy
-This package contains the implementations of all of the [`AssetProxy`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxy) contracts available within the 0x protocol. These contracts are responsible for decoding the `assetData` sent to them and performing the actual transfer of assets. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains the implementations of all of the [`AssetProxy`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxy) contracts available within the 0x protocol. These contracts are responsible for decoding the `assetData` sent to them and performing the actual transfer of assets. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-asset-proxy --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/asset-proxy/contracts/src/ERC1155Proxy.sol
+++ b/contracts/asset-proxy/contracts/src/ERC1155Proxy.sol
@@ -18,349 +18,71 @@
 pragma solidity ^0.5.9;
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 import "@0x/contracts-erc1155/contracts/src/interfaces/IERC1155.sol";
 import "./MixinAuthorizable.sol";
 import "./interfaces/IAssetProxy.sol";
 contract ERC1155Proxy is
-    MixinAuthorizable
+    MixinAuthorizable,
    SafeMath,
    IAssetProxy
 {
    using LibBytes for bytes;
    // Id of this proxy.
    bytes4 constant internal PROXY_ID = bytes4(keccak256("ERC1155Assets(address,uint256[],uint256[],bytes)"));
-    // solhint-disable-next-line payable-fallback
+    /// @dev Transfers batch of ERC1155 assets. Either succeeds or throws.
-    function () 
+    /// @param assetData Byte array encoded with ERC1155 token address, array of ids, array of values, and callback data.
    /// @param from Address to transfer assets from.
    /// @param to Address to transfer assets to.
    /// @param amount Amount that will be multiplied with each element of `assetData.values` to scale the
    ///        values that will be transferred.
    function transferFrom(
        bytes calldata assetData,
        address from,
        address to,
        uint256 amount
    )
        external
        onlyAuthorized
    {
-        // Input calldata to this function is encoded as follows:
+        // Decode params from `assetData`
-        //                      -- TABLE #1 --
+        // solhint-disable indent
-        // | Area     | Offset (**) | Length      | Contents                        |
+        (
-        // |----------|-------------|-------------|---------------------------------|
+            address erc1155TokenAddress,
-        // | Header   | 0           | 4           | function selector               |
+            uint256[] memory ids,
-        // | Params   |             | 4 * 32      | function parameters:            |
+            uint256[] memory values,
-        // |          | 4           |             |   1. offset to assetData (*)    |
+            bytes memory data
-        // |          | 36          |             |   2. from                       |
+        ) = abi.decode(
-        // |          | 68          |             |   3. to                         |
+            assetData.sliceDestructive(4, assetData.length),
-        // |          | 100         |             |   4. amount                     |
+            (address, uint256[], uint256[], bytes)
-        // | Data     |             |             | assetData:                      |
+        );
-        // |          | 132         | 32          | assetData Length                |
+        // solhint-enable indent
        // |          | 164         | (see below) | assetData Contents              |
        //
        //
        // Asset data is encoded as follows:
        //                      -- TABLE #2 --
        // | Area     | Offset      | Length  | Contents                            |
        // |----------|-------------|---------|-------------------------------------|
        // | Header   | 0           | 4       | assetProxyId                        |
        // | Params   |             | 4 * 32  | function parameters:                |
        // |          | 4           |         |   1. address of ERC1155 contract    |
        // |          | 36          |         |   2. offset to ids (*)              |
        // |          | 68          |         |   3. offset to values (*)           |
        // |          | 100         |         |   4. offset to data (*)             |
        // | Data     |             |         | ids:                                |
        // |          | 132         | 32      |   1. ids Length                     |
        // |          | 164         | a       |   2. ids Contents                   |
        // |          |             |         | values:                             |
        // |          | 164 + a     | 32      |   1. values Length                  |
        // |          | 196 + a     | b       |   2. values Contents                |
        // |          |             |         | data:                               |
        // |          | 196 + a + b | 32      |   1. data Length                    |
        // |          | 228 + a + b | c       |   2. data Contents                  |
        //
        //
        // Calldata for target ERC155 asset is encoded for safeBatchTransferFrom:
        //                      -- TABLE #3 --
        // | Area     | Offset (**) | Length  | Contents                            |
        // |----------|-------------|---------|-------------------------------------|
        // | Header   | 0           | 4       | safeBatchTransferFrom selector      |
        // | Params   |             | 5 * 32  | function parameters:                |
        // |          | 4           |         |   1. from address                   |
        // |          | 36          |         |   2. to address                     |
        // |          | 68          |         |   3. offset to ids (*)              |
        // |          | 100         |         |   4. offset to values (*)           |
        // |          | 132         |         |   5. offset to data (*)             |
        // | Data     |             |         | ids:                                |
        // |          | 164         | 32      |   1. ids Length                     |
        // |          | 196         | a       |   2. ids Contents                   |
        // |          |             |         | values:                             |
        // |          | 196 + a     | 32      |   1. values Length                  |
        // |          | 228 + a     | b       |   2. values Contents                |
        // |          |             |         | data:                               |
        // |          | 228 + a + b | 32      |   1. data Length                    |
        // |          | 260 + a + b | c       |   2. data Contents                  |
        //
        //
        // (*): offset is computed from start of function parameters, so offset
        //      by an additional 4 bytes in the calldata.
        //
        // (**): the `Offset` column is computed assuming no calldata compression;
        //       offsets in the Data Area are dynamic and should be evaluated in
        //       real-time.
        //
        // WARNING: The ABIv2 specification allows additional padding between
        //          the Params and Data section. This will result in a larger
        //          offset to assetData.
        //
        // Note: Table #1 and Table #2 exist in Calldata. We construct Table #3 in memory.
        //
        //
        assembly {
            // The first 4 bytes of calldata holds the function selector
            let selector := and(calldataload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000)
-            // `transferFrom` will be called with the following parameters:
+        // Scale values up by `amount`
-            // assetData Encoded byte array.
+        uint256 length = values.length;
-            // from Address to transfer asset from.
+        uint256[] memory scaledValues = new uint256[](length);
-            // to Address to transfer asset to.
+        for (uint256 i = 0; i != length; i++) {
-            // amount Amount of asset to transfer.
+            // We write the scaled values to an unused location in memory in order
-            // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4
+            // to avoid copying over `ids` or `data`. This is possible if they are
-            if eq(selector, 0xa85e59e400000000000000000000000000000000000000000000000000000000) {
+            // identical to `values` and the offsets for each are pointing to the 
-
+            // same location in the ABI encoded calldata.
-                // To lookup a value in a mapping, we load from the storage location keccak256(k, p),
+            scaledValues[i] = safeMul(values[i], amount);
                // where k is the key left padded to 32 bytes and p is the storage slot
                mstore(0, caller)
                mstore(32, authorized_slot)
                 // Revert if authorized[msg.sender] == false
                if iszero(sload(keccak256(0, 64))) {
                    // Revert with `Error("SENDER_NOT_AUTHORIZED")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x0000001553454e4445525f4e4f545f415554484f52495a454400000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Construct Table #3 in memory, starting at memory offset 0.
                // The algorithm below maps calldata (Table #1) and assetData (Table #2) to memory (Table #3).
                // Once Table #3 ha been constructed in memory, the destination erc1155 contract is called using this
                // as its calldata. This process is divided into three steps, below.
                ////////// STEP 1/3 - Map calldata to memory (Table #1 -> Table #3) //////////
                // Store the safeBatchTransferFrom function selector, which is computed using:
                // bytes4(keccak256("safeBatchTransferFrom(address,address,uint256[],uint256[],bytes)"))
                mstore(0, 0x2eb2c2d600000000000000000000000000000000000000000000000000000000)
                // Copy `from` and `to` fields from calldata (Table #1) into memory (Table #3)
                calldatacopy(
                    4,          // aligned such that `from` and `to` are at the correct location for Table #3
                    36,         // beginning of `from` field from Table #1
                    64          // 32 bytes for `from` + 32 bytes for `to` field
                )
                ////////// STEP 2/3 - Map assetData to memory (Table #2 -> Table #3) //////////
                // Map relevant fields from assetData (Table #2) into memory (Table #3)
                // The Contents column of Table #2 is the same as Table #3,
                // beginning from parameter 3 - `offset to ids (*)`
                // The `values` from assetData (Table #2) are multiplied by `amount` (Table #1)
                // when they are copied into memory.
                // Load offset to `assetData`
                let assetDataOffset := add(calldataload(4), 4)
                // Load length in bytes of `assetData`
                let assetDataLength := calldataload(assetDataOffset)
                // Assert that the length of asset data:
                // 1. Must be at least 132 bytes (Table #2)
                // 2. Must be a multiple of 32 (excluding the 4-byte selector)
                if or(lt(assetDataLength, 132), mod(sub(assetDataLength, 4), 32)) {
                    // Revert with `Error("INVALID_ASSET_DATA_LENGTH")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000019494e56414c49445f41535345545f444154415f4c454e475448000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // End of asset data in calldata
                // +32 for length field
                let assetDataEnd := add(assetDataOffset, add(assetDataLength, 32))
                if gt(assetDataEnd, calldatasize()) {
                    // Revert with `Error("INVALID_ASSET_DATA_END")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000016494e56414c49445f41535345545f444154415f454e44000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Load offset to parameters section in asset data
                let paramsInAssetDataOffset := add(assetDataOffset, 36)
                // Offset of end of Data Area in memory.
                // This value will grow as we construct Table #3.
                let dataAreaEndOffset := 164
                // Load amount by which to scale values
                let amount := calldataload(100)
                // Store pointer to `ids` (Table #3)
                // Subtract 4 for `safeBatchTransferFrom` selector
                mstore(68, sub(dataAreaEndOffset, 4))
                // Ensure length of `ids` does not overflow
                let idsOffset := add(paramsInAssetDataOffset, calldataload(add(assetDataOffset, 68)))
                let idsLength := calldataload(idsOffset)
                let idsLengthInBytes := mul(idsLength, 32)
                if sub(div(idsLengthInBytes, 32), idsLength) {
                    // Revert with `Error("UINT256_OVERFLOW")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x0000001055494e543235365f4f564552464c4f57000000000000000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Ensure `ids` does not resolve to outside of `assetData`
                let idsBegin := add(idsOffset, 32)
                let idsEnd := add(idsBegin, idsLengthInBytes)
                if gt(idsEnd, assetDataEnd) {
                    // Revert with `Error("INVALID_IDS_OFFSET")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000012494e56414c49445f4944535f4f464653455400000000000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Copy `ids` from `assetData` (Table #2) to memory (Table #3)
                calldatacopy(
                    dataAreaEndOffset,
                    idsOffset,
                    add(idsLengthInBytes, 32)
                )
                dataAreaEndOffset := add(dataAreaEndOffset, add(idsLengthInBytes, 32))
                // Store pointer to `values` (Table #3)
                // Subtract 4 for `safeBatchTrasferFrom` selector
                mstore(100, sub(dataAreaEndOffset, 4))
                // Ensure length of `values` does not overflow
                let valuesOffset := add(paramsInAssetDataOffset, calldataload(add(assetDataOffset, 100)))
                let valuesLength := calldataload(valuesOffset)
                let valuesLengthInBytes := mul(valuesLength, 32)
                if sub(div(valuesLengthInBytes, 32), valuesLength) {
                    // Revert with `Error("UINT256_OVERFLOW")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x0000001055494e543235365f4f564552464c4f57000000000000000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Ensure `values` does not resolve to outside of `assetData`
                let valuesBegin := add(valuesOffset, 32)
                let valuesEnd := add(valuesBegin, valuesLengthInBytes)
                if gt(valuesEnd, assetDataEnd) {
                    // Revert with `Error("INVALID_VALUES_OFFSET")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000015494e56414c49445f56414c5545535f4f464653455400000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Store length of `values`
                mstore(dataAreaEndOffset, valuesLength)
                dataAreaEndOffset := add(dataAreaEndOffset, 32)
                // Scale and store elements of `values`
                for { let currentValueOffset := valuesBegin }
                    lt(currentValueOffset, valuesEnd)
                    { currentValueOffset := add(currentValueOffset, 32) }
                {
                    // Load value and generate scaled value
                    let currentValue := calldataload(currentValueOffset)
                    let currentValueScaled := mul(currentValue, amount)
                    // Revert if `amount` != 0 and multiplication resulted in an overflow
                    if iszero(or(
                        iszero(amount),
                        eq(div(currentValueScaled, amount), currentValue)
                    )) {
                        // Revert with `Error("UINT256_OVERFLOW")`
                        mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                        mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                        mstore(64, 0x0000001055494e543235365f4f564552464c4f57000000000000000000000000)
                        mstore(96, 0)
                        revert(0, 100)
                    }
                    // There was no overflow, store the scaled token value
                    mstore(dataAreaEndOffset, currentValueScaled)
                    dataAreaEndOffset := add(dataAreaEndOffset, 32)
                }
                // Store pointer to `data` (Table #3)
                // Subtract 4 for `safeBatchTrasferFrom` selector
                mstore(132, sub(dataAreaEndOffset, 4))
                // Ensure `data` does not resolve to outside of `assetData`
                let dataOffset := add(paramsInAssetDataOffset, calldataload(add(assetDataOffset, 132)))
                let dataLengthInBytes := calldataload(dataOffset)
                let dataBegin := add(dataOffset, 32)
                let dataEnd := add(dataBegin, dataLengthInBytes)
                if gt(dataEnd, assetDataEnd) {
                    // Revert with `Error("INVALID_DATA_OFFSET")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000013494e56414c49445f444154415f4f4646534554000000000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Copy `data` from `assetData` (Table #2) to memory (Table #3)
                calldatacopy(
                    dataAreaEndOffset,
                    dataOffset,
                    add(dataLengthInBytes, 32)
                )
                // Update the end of data offset to be word-aligned
                let dataLengthInWords := div(add(dataLengthInBytes, 31), 32)
                let dataLengthInBytesWordAligned := mul(dataLengthInWords, 32)
                dataAreaEndOffset := add(dataAreaEndOffset, add(dataLengthInBytesWordAligned, 32))
                ////////// STEP 3/3 - Execute Transfer //////////
                // Load the address of the destination erc1155 contract from asset data (Table #2)
                // +32 bytes for assetData Length
                // +4 bytes for assetProxyId
                let assetAddress := and(
                    calldataload(add(assetDataOffset, 36)),
                    0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff
                )
                // Call into the destination erc1155 contract using as calldata Table #3 (constructed in-memory above)
                let success := call(
                    gas,                                    // forward all gas
                    assetAddress,                           // call address of erc1155 asset
                    0,                                      // don't send any ETH
                    0,                                      // pointer to start of input
                    dataAreaEndOffset,                      // length of input is the end of the Data Area (Table #3)
                    0,                                      // write output over memory that won't be reused
                    0                                       // don't copy output to memory
                )
                // Revert with reason given by AssetProxy if `transferFrom` call failed
                if iszero(success) {
                    returndatacopy(
                        0,                // copy to memory at 0
                        0,                // copy from return data at 0
                        returndatasize()  // copy all return data
                    )
                    revert(0, returndatasize())
                }
                // Return if call was successful
                return(0, 0)
            }
            // Revert if undefined function is called
            revert(0, 0)
        }
        // Execute `safeBatchTransferFrom` call
        // Either succeeds or throws
        IERC1155(erc1155TokenAddress).safeBatchTransferFrom(
            from,
            to,
            ids,
            scaledValues,
            data
        );
    }
    /// @dev Gets the proxy id associated with the proxy address.
--- a/contracts/asset-proxy/contracts/src/MultiAssetProxy.sol
+++ b/contracts/asset-proxy/contracts/src/MultiAssetProxy.sol
@@ -90,7 +90,10 @@ contract MultiAssetProxy is
                //          offset to assetData.
                // Load offset to `assetData`
-                let assetDataOffset := calldataload(4)
+                let assetDataOffset := add(calldataload(4), 4)
                // Load length in bytes of `assetData`
                let assetDataLength := calldataload(assetDataOffset)
                // Asset data itself is encoded as follows:
                //
@@ -108,41 +111,62 @@ contract MultiAssetProxy is
                // |          | 132 + a     | b       | nestedAssetData Contents (offsets)  |
                // |          | 132 + a + b |         | nestedAssetData[0, ..., len]        |
                // Assert that the length of asset data:
                // 1. Must be at least 68 bytes (see table above)
                // 2. Must be a multiple of 32 (excluding the 4-byte selector)
                if or(lt(assetDataLength, 68), mod(sub(assetDataLength, 4), 32)) {
                    // Revert with `Error("INVALID_ASSET_DATA_LENGTH")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000019494e56414c49445f41535345545f444154415f4c454e475448000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // End of asset data in calldata
                // assetDataOffset
                // + 32 (assetData len)
                let assetDataEnd := add(assetDataOffset, add(assetDataLength, 32))
                if gt(assetDataEnd, calldatasize()) {
                    // Revert with `Error("INVALID_ASSET_DATA_END")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000016494e56414c49445f41535345545f444154415f454e44000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // In order to find the offset to `amounts`, we must add:
-                // 4 (function selector)
+                // assetDataOffset
                // + assetDataOffset
                // + 32 (assetData len)
                // + 4 (assetProxyId)
-                let amountsOffset := calldataload(add(assetDataOffset, 40))
+                let amountsOffset := calldataload(add(assetDataOffset, 36))
                // In order to find the offset to `nestedAssetData`, we must add:
-                // 4 (function selector)
+                // assetDataOffset
                // + assetDataOffset
                // + 32 (assetData len)
                // + 4 (assetProxyId)
                // + 32 (amounts offset)
-                let nestedAssetDataOffset := calldataload(add(assetDataOffset, 72))
+                let nestedAssetDataOffset := calldataload(add(assetDataOffset, 68))
                // In order to find the start of the `amounts` contents, we must add: 
-                // 4 (function selector) 
+                // assetDataOffset 
                // + assetDataOffset 
                // + 32 (assetData len)
                // + 4 (assetProxyId)
                // + amountsOffset
                // + 32 (amounts len)
-                let amountsContentsStart := add(assetDataOffset, add(amountsOffset, 72))
+                let amountsContentsStart := add(assetDataOffset, add(amountsOffset, 68))
                // Load number of elements in `amounts`
                let amountsLen := calldataload(sub(amountsContentsStart, 32))
                // In order to find the start of the `nestedAssetData` contents, we must add: 
-                // 4 (function selector) 
+                // assetDataOffset 
                // + assetDataOffset 
                // + 32 (assetData len)
                // + 4 (assetProxyId)
                // + nestedAssetDataOffset
                // + 32 (nestedAssetData len)
-                let nestedAssetDataContentsStart := add(assetDataOffset, add(nestedAssetDataOffset, 72))
+                let nestedAssetDataContentsStart := add(assetDataOffset, add(nestedAssetDataOffset, 68))
                // Load number of elements in `nestedAssetData`
                let nestedAssetDataLen := calldataload(sub(nestedAssetDataContentsStart, 32))
@@ -204,15 +228,20 @@ contract MultiAssetProxy is
                    let nestedAssetDataElementOffset := calldataload(add(nestedAssetDataContentsStart, i))
                    // In order to find the start of the `nestedAssetData[i]` contents, we must add:
-                    // 4 (function selector) 
+                    // assetDataOffset 
                    // + assetDataOffset 
                    // + 32 (assetData len)
                    // + 4 (assetProxyId)
                    // + nestedAssetDataOffset
                    // + 32 (nestedAssetData len)
                    // + nestedAssetDataElementOffset
                    // + 32 (nestedAssetDataElement len)
-                    let nestedAssetDataElementContentsStart := add(assetDataOffset, add(nestedAssetDataOffset, add(nestedAssetDataElementOffset, 104)))
+                    let nestedAssetDataElementContentsStart := add(
                        assetDataOffset,
                        add(
                            nestedAssetDataOffset,
                            add(nestedAssetDataElementOffset, 100)
                        )
                    )
                    // Load length of `nestedAssetData[i]`
                    let nestedAssetDataElementLenStart := sub(nestedAssetDataElementContentsStart, 32)
--- a/contracts/asset-proxy/contracts/src/StaticCallProxy.sol
+++ b/contracts/asset-proxy/contracts/src/StaticCallProxy.sol
@@ -18,181 +18,57 @@
 pragma solidity ^0.5.9;
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 // solhint-disable no-unused-vars
 contract StaticCallProxy {
    using LibBytes for bytes;
    // Id of this proxy.
    bytes4 constant internal PROXY_ID = bytes4(keccak256("StaticCall(address,bytes,bytes32)"));
-    // solhint-disable-next-line payable-fallback
+    /// @dev Makes a staticcall to a target address and verifies that the data returned matches the expected return data.
-    function ()
+    /// @param assetData Byte array encoded with staticCallTarget, staticCallData, and expectedCallResultHash
    /// @param from This value is ignored.
    /// @param to This value is ignored.
    /// @param amount This value is ignored.
    function transferFrom(
        bytes calldata assetData,
        address from,
        address to,
        uint256 amount
    )
        external
        view
    {
-        assembly {
+        // Decode params from `assetData`
-            // The first 4 bytes of calldata holds the function selector
+        (
-            let selector := and(calldataload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000)
+            address staticCallTarget,
            bytes memory staticCallData,
            bytes32 expectedReturnDataHash
        ) = abi.decode(
            assetData.sliceDestructive(4, assetData.length),
            (address, bytes, bytes32)
        );
-            // `transferFrom` will be called with the following parameters:
+        // Execute staticcall
-            // assetData Encoded byte array.
+        (bool success, bytes memory returnData) = staticCallTarget.staticcall(staticCallData);
            // from Address to transfer asset from.
            // to Address to transfer asset to.
            // amount Amount of asset to transfer.
            // bytes4(keccak256("transferFrom(bytes,address,address,uint256)")) = 0xa85e59e4
            if eq(selector, 0xa85e59e400000000000000000000000000000000000000000000000000000000) {
-                // `transferFrom`.
+        // Revert with returned data if staticcall is unsuccessful
-                // The function is marked `external`, so no abi decoding is done for
+        if (!success) {
-                // us. Instead, we expect the `calldata` memory to contain the
+            assembly {
-                // following:
+                revert(add(returnData, 32), mload(returnData))
                //
                // | Area     | Offset | Length  | Contents                            |
                // |----------|--------|---------|-------------------------------------|
                // | Header   | 0      | 4       | function selector                   |
                // | Params   |        | 4 * 32  | function parameters:                |
                // |          | 4      |         |   1. offset to assetData (*)        |
                // |          | 36     |         |   2. from                           |
                // |          | 68     |         |   3. to                             |
                // |          | 100    |         |   4. amount                         |
                // | Data     |        |         | assetData:                          |
                // |          | 132    | 32      | assetData Length                    |
                // |          | 164    | **      | assetData Contents                  |
                //
                // (*): offset is computed from start of function parameters, so offset
                //      by an additional 4 bytes in the calldata.
                //
                // (**): see table below to compute length of assetData Contents
                // (***): Note that the `from`, `to`, and `amount` params in calldata are ignored in this function.
                //
                // WARNING: The ABIv2 specification allows additional padding between
                //          the Params and Data section. This will result in a larger
                //          offset to assetData.
                // Load offset to `assetData`
                let assetDataOffset := add(calldataload(4), 4)
                // Validate length of `assetData`
                let assetDataLen := calldataload(assetDataOffset)
                if or(lt(assetDataLen, 100), mod(sub(assetDataLen, 4), 32)) {
                    // Revert with `Error("INVALID_ASSET_DATA_LENGTH")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000019494e56414c49445f41535345545f444154415f4c454e475448000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Ensure that `assetData` ends inside of calldata
                let assetDataEnd := add(assetDataOffset, add(assetDataLen, 32))
                if gt(assetDataEnd, calldatasize()) {
                    // Revert with `Error("INVALID_ASSET_DATA_END")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x00000016494e56414c49445f41535345545f444154415f454e44000000000000)
                    mstore(96, 0)
                    revert(0, 100)
                }
                // Asset data is encoded as follows:
                // | Area     | Offset      | Length  | Contents                             |
                // |----------|-------------|---------|--------------------------------------|
                // | Header   | 0           | 4       | assetProxyId                         |
                // | Params   |             | 4 * 32  | function parameters:                 |
                // |          | 4           |         |   1. address of callTarget           |
                // |          | 36          |         |   2. offset to staticCallData (*)    |
                // |          | 68          |         |   3. expected 32 byte hash of output |
                // | Data     |             |         | staticCallData:                      |
                // |          | 100         | 32      |   1. staticCallData Length           |
                // |          | 132         | a       |   2. staticCallData Contents         | 
                // In order to find the offset to `staticCallData`, we must add:
                // assetDataOffset
                // + 32 (assetData len)
                // + 4 (proxyId)
                // + 32 (callTarget)
                let paramsInAssetDataOffset := add(assetDataOffset, 36)
                let staticCallDataOffset := add(paramsInAssetDataOffset, calldataload(add(assetDataOffset, 68)))
                // Load length of `staticCallData`
                let staticCallDataLen := calldataload(staticCallDataOffset)
                // Ensure `staticCallData` does not begin to outside of `assetData`
                let staticCallDataBegin := add(staticCallDataOffset, 32)
                let staticCallDataEnd := add(staticCallDataBegin, staticCallDataLen)
                if gt(staticCallDataEnd, assetDataEnd) {
                    // Revert with `Error("INVALID_STATIC_CALL_DATA_OFFSET")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x0000001f494e56414c49445f5354415449435f43414c4c5f444154415f4f4646)
                    mstore(96, 0x5345540000000000000000000000000000000000000000000000000000000000)
                    revert(0, 100)
                }
                // Copy `staticCallData` into memory
                calldatacopy(
                    0,                              // memory can be safely overwritten from beginning
                    staticCallDataBegin,            // start of `staticCallData`
                    staticCallDataLen               // copy the entire `staticCallData`
                )
                // In order to find the offset to `callTarget`, we must add:
                // assetDataOffset
                // + 32 (assetData len)
                // + 4 (proxyId)
                let callTarget := and(
                    calldataload(add(assetDataOffset, 36)),
                    0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff
                )
                // Perform `callTarget.staticcall(staticCallData)`
                let success := staticcall(
                    gas,                         // forward all gas
                    callTarget,                  // call address `callTarget`
                    0,                           // pointer to start of input
                    staticCallDataLen,           // length of input
                    0,                           // start of memory can be safely overwritten
                    0                            // don't copy output to memory
                )
                // Copy entire output to start of memory
                let outputLen := returndatasize()
                returndatacopy(
                    0,                // copy to memory at 0
                    0,                // copy from return data at 0
                    outputLen         // copy all return data
                )
                // Revert with reason given by `callTarget` if staticcall is unsuccessful
                if iszero(success) {
                    revert(0, outputLen)
                }
                // Calculate hash of output
                let callResultHash := keccak256(0, outputLen)
                // In order to find the offset to `expectedCallResultHash`, we must add:
                // assetDataOffset
                // + 32 (assetData len)
                // + 4 (proxyId)
                // + 32 (callTarget)
                // + 32 (staticCallDataOffset)
                let expectedResultHash := calldataload(add(assetDataOffset, 100))
                if sub(callResultHash, expectedResultHash) {
                    // Revert with `Error("UNEXPECTED_STATIC_CALL_RESULT")`
                    mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                    mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                    mstore(64, 0x0000001d554e45585045435445445f5354415449435f43414c4c5f524553554c)
                    mstore(96, 0x5400000000000000000000000000000000000000000000000000000000000000)
                    revert(0, 100)
                }
                // Return if output matched expected output
                return(0, 0)
            }
            // Revert if undefined function is called
            revert(0, 0)
        }
        // Revert if hash of return data is not as expected
        bytes32 returnDataHash = keccak256(returnData);
        require(
            expectedReturnDataHash == returnDataHash,
            "UNEXPECTED_STATIC_CALL_RESULT"
        );
    }
    /// @dev Gets the proxy id associated with the proxy address.
@@ -204,4 +80,4 @@ contract StaticCallProxy {
    {
        return PROXY_ID;
    }
-}
+}
--- a/contracts/asset-proxy/contracts/src/interfaces/IAssetProxy.sol
+++ b/contracts/asset-proxy/contracts/src/interfaces/IAssetProxy.sol
@@ -21,9 +21,8 @@ pragma solidity ^0.5.5;
 import "./IAuthorizable.sol";
-contract IAssetProxy is
+contract IAssetProxy {
-    IAuthorizable
+
 {
    /// @dev Transfers assets. Either succeeds or throws.
    /// @param assetData Byte array encoded for the respective asset proxy.
    /// @param from Address to transfer asset from.
--- a/contracts/asset-proxy/package.json
+++ b/contracts/asset-proxy/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-asset-proxy",
-    "version": "2.2.1",
+    "version": "2.2.8",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,20 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/protocol/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,17 +69,17 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-erc1155": "^1.1.8",
+        "@0x/contracts-erc1155": "^1.1.15",
-        "@0x/contracts-erc20": "^2.2.7",
+        "@0x/contracts-erc20": "^2.2.14",
-        "@0x/contracts-erc721": "^2.1.8",
+        "@0x/contracts-erc721": "^2.1.15",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/order-utils": "^8.2.1",
+        "@0x/order-utils": "^8.4.0",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "ethereumjs-util": "^5.1.1",
        "lodash": "^4.17.11"
    },
--- a/contracts/asset-proxy/test/authorizable.ts
+++ b/contracts/asset-proxy/test/authorizable.ts
@@ -37,6 +37,7 @@ describe('Authorizable', () => {
            artifacts.MixinAuthorizable,
            provider,
            txDefaults,
            artifacts,
        );
    });
    beforeEach(async () => {
--- a/contracts/asset-proxy/test/erc1155_proxy.ts
+++ b/contracts/asset-proxy/test/erc1155_proxy.ts
@@ -23,7 +23,7 @@ import { LogWithDecodedArgs } from 'ethereum-types';
 import * as ethUtil from 'ethereumjs-util';
 import * as _ from 'lodash';
-import { ERC1155ProxyWrapper, ERC721ProxyContract } from '../src';
+import { artifacts, ERC1155ProxyContract, ERC1155ProxyWrapper } from '../src';
 chaiSetup.configure();
 const expect = chai.expect;
@@ -51,7 +51,7 @@ describe('ERC1155Proxy', () => {
    let receiver: string;
    let receiverContract: string;
    // contracts & wrappers
-    let erc1155Proxy: ERC721ProxyContract;
+    let erc1155Proxy: ERC1155ProxyContract;
    let erc1155Receiver: DummyERC1155ReceiverContract;
    let erc1155ProxyWrapper: ERC1155ProxyWrapper;
    let erc1155Contract: ERC1155MintableContract;
@@ -89,6 +89,7 @@ describe('ERC1155Proxy', () => {
            erc1155Artifacts.DummyERC1155Receiver,
            provider,
            txDefaults,
            artifacts,
        );
        receiverContract = erc1155Receiver.address;
        await erc1155ProxyWrapper.setBalancesAndAllowancesAsync();
@@ -1077,7 +1078,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token ids to point outside the calldata.
+            // We want to change the offset to token ids to point outside the calldata.
            const encodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000080';
            const badEncodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000180';
            const assetDataWithBadTokenIdsOffset = assetData.replace(
@@ -1085,7 +1086,7 @@ describe('ERC1155Proxy', () => {
                badEncodedOffsetToTokenIds,
            );
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1097,7 +1098,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithBadTokenIdsOffset,
                ),
                RevertReason.InvalidIdsOffset,
            );
        });
        it('should revert if an element of token ids lies to outside the bounds of calldata', async () => {
@@ -1125,7 +1125,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token ids to the end of calldata.
+            // We want to change the offset to token ids to the end of calldata.
            // Then we'll add an invalid length: we encode length of 2 but only add 1 element.
            const encodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000080';
            const newEcodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000140';
@@ -1137,7 +1137,7 @@ describe('ERC1155Proxy', () => {
            const encodedTokenIdValues = '0000000000000000000000000000000000000000000000000000000000000001';
            const assetDataWithBadTokenIds = `${assetDataWithNewTokenIdsOffset}${encodedTokenIdsLength}${encodedTokenIdValues}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1149,7 +1149,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithBadTokenIds,
                ),
                RevertReason.InvalidIdsOffset,
            );
        });
        it('should revert token ids length overflows', async () => {
@@ -1177,7 +1176,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token ids to point to the end of calldata
+            // We want to change the offset to token ids to point to the end of calldata
            const encodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000080';
            const badEncodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000140';
            const assetDataWithBadTokenIdsOffset = assetData.replace(
@@ -1189,7 +1188,7 @@ describe('ERC1155Proxy', () => {
            const buffer = '0'.repeat(64 * 10);
            const assetDataWithOverflow = `${assetDataWithBadTokenIdsOffset}${encodedIdsLengthOverflow}${buffer}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1201,7 +1200,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithOverflow,
                ),
                RevertReason.Uint256Overflow,
            );
        });
        it('should revert token values length overflows', async () => {
@@ -1229,7 +1227,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token values to point to the end of calldata
+            // We want to change the offset to token values to point to the end of calldata
            const encodedOffsetToTokenIds = '00000000000000000000000000000000000000000000000000000000000000c0';
            const badEncodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000140';
            const assetDataWithBadTokenIdsOffset = assetData.replace(
@@ -1241,7 +1239,7 @@ describe('ERC1155Proxy', () => {
            const buffer = '0'.repeat(64 * 10);
            const assetDataWithOverflow = `${assetDataWithBadTokenIdsOffset}${encodedIdsLengthOverflow}${buffer}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1253,7 +1251,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithOverflow,
                ),
                RevertReason.Uint256Overflow,
            );
        });
        it('should revert token data length overflows', async () => {
@@ -1281,7 +1278,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token ids to point to the end of calldata,
+            // We want to change the offset to token ids to point to the end of calldata,
            // which we'll extend with a bad length.
            const encodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000100';
            const badEncodedOffsetToTokenIds = '0000000000000000000000000000000000000000000000000000000000000140';
@@ -1294,7 +1291,7 @@ describe('ERC1155Proxy', () => {
            const buffer = '0'.repeat(64 * 10);
            const assetDataWithOverflow = `${assetDataWithBadTokenIdsOffset}${encodedIdsLengthOverflow}${buffer}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1306,7 +1303,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithOverflow,
                ),
                RevertReason.InvalidDataOffset,
            );
        });
        it('should revert if token values resolves to outside the bounds of calldata', async () => {
@@ -1334,7 +1330,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token values to point outside the calldata.
+            // We want to change the offset to token values to point outside the calldata.
            const encodedOffsetToTokenValues = '00000000000000000000000000000000000000000000000000000000000000c0';
            const badEncodedOffsetToTokenValues = '00000000000000000000000000000000000000000000000000000000000001c0';
            const assetDataWithBadTokenIdsOffset = assetData.replace(
@@ -1342,7 +1338,7 @@ describe('ERC1155Proxy', () => {
                badEncodedOffsetToTokenValues,
            );
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1354,7 +1350,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithBadTokenIdsOffset,
                ),
                RevertReason.InvalidValuesOffset,
            );
        });
        it('should revert if an element of token values lies to outside the bounds of calldata', async () => {
@@ -1382,7 +1377,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token values to the end of calldata.
+            // We want to change the offset to token values to the end of calldata.
            // Then we'll add an invalid length: we encode length of 2 but only add 1 element.
            const encodedOffsetToTokenValues = '00000000000000000000000000000000000000000000000000000000000000c0';
            const newEcodedOffsetToTokenValues = '0000000000000000000000000000000000000000000000000000000000000140';
@@ -1394,7 +1389,7 @@ describe('ERC1155Proxy', () => {
            const encodedTokenValuesElements = '0000000000000000000000000000000000000000000000000000000000000001';
            const assetDataWithBadTokenIds = `${assetDataWithNewTokenValuesOffset}${encodedTokenValuesLength}${encodedTokenValuesElements}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1406,7 +1401,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithBadTokenIds,
                ),
                RevertReason.InvalidValuesOffset,
            );
        });
        it('should revert if token data resolves to outside the bounds of calldata', async () => {
@@ -1434,7 +1428,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token data to point outside the calldata.
+            // We want to change the offset to token data to point outside the calldata.
            const encodedOffsetToTokenData = '0000000000000000000000000000000000000000000000000000000000000100';
            const badEncodedOffsetToTokenData = '00000000000000000000000000000000000000000000000000000000000001c0';
            const assetDataWithBadTokenDataOffset = assetData.replace(
@@ -1442,7 +1436,7 @@ describe('ERC1155Proxy', () => {
                badEncodedOffsetToTokenData,
            );
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1454,7 +1448,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithBadTokenDataOffset,
                ),
                RevertReason.InvalidDataOffset,
            );
        });
        it('should revert if an element of token data lies to outside the bounds of calldata', async () => {
@@ -1482,7 +1475,7 @@ describe('ERC1155Proxy', () => {
            // 0x100      0000000000000000000000000000000000000000000000000000000000000004
            // 0x120      0102030400000000000000000000000000000000000000000000000000000000
            //
-            // We want to chan ge the offset to token data to the end of calldata.
+            // We want to change the offset to token data to the end of calldata.
            // Then we'll add an invalid length: we encode length of 33 but only add 32 elements.
            const encodedOffsetToTokenData = '0000000000000000000000000000000000000000000000000000000000000100';
            const newEcodedOffsetToTokenData = '0000000000000000000000000000000000000000000000000000000000000140';
@@ -1494,7 +1487,7 @@ describe('ERC1155Proxy', () => {
            const encodedTokenDataElements = '0000000000000000000000000000000000000000000000000000000000000001';
            const assetDataWithBadTokenData = `${assetDataWithNewTokenDataOffset}${encodedTokenDataLength}${encodedTokenDataElements}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1506,7 +1499,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetDataWithBadTokenData,
                ),
                RevertReason.InvalidDataOffset,
            );
        });
        it('should revert if asset data lies outside the bounds of calldata', async () => {
@@ -1536,9 +1528,8 @@ describe('ERC1155Proxy', () => {
            const invalidOffsetToAssetData = '0000000000000000000000000000000000000000000000000000000000000180';
            const badTxData = txData.replace(offsetToAssetData, invalidOffsetToAssetData);
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromRawAsync(badTxData, authorized),
                RevertReason.InvalidAssetDataLength,
            );
        });
        it('should revert if asset data lies outside the bounds of calldata', async () => {
@@ -1570,39 +1561,8 @@ describe('ERC1155Proxy', () => {
            const newAssetData = '0000000000000000000000000000000000000000000000000000000000000304';
            const badTxData = `${txData.replace(offsetToAssetData, invalidOffsetToAssetData)}${newAssetData}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromRawAsync(badTxData, authorized),
                RevertReason.InvalidAssetDataEnd,
            );
        });
        it('should revert if length of assetData, excluding the selector, is not a multiple of 32', async () => {
            // setup test parameters
            const tokensToTransfer = fungibleTokens.slice(0, 1);
            const valuesToTransfer = [fungibleValueToTransferLarge];
            const valueMultiplier = valueMultiplierSmall;
            const erc1155ContractAddress = erc1155Wrapper.getContract().address;
            const assetData = assetDataUtils.encodeERC1155AssetData(
                erc1155ContractAddress,
                tokensToTransfer,
                valuesToTransfer,
                receiverCallbackData,
            );
            const extraData = '01';
            const assetDataWithExtraData = `${assetData}${extraData}`;
            // execute transfer
            await expectTransactionFailedAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
                    erc1155Contract.address,
                    tokensToTransfer,
                    valuesToTransfer,
                    valueMultiplier,
                    receiverCallbackData,
                    authorized,
                    assetDataWithExtraData,
                ),
                RevertReason.InvalidAssetDataLength,
            );
        });
        it('should revert if length of assetData is less than 132 bytes', async () => {
@@ -1618,7 +1578,7 @@ describe('ERC1155Proxy', () => {
            const zeros96Bytes = '0'.repeat(188);
            const assetData131Bytes = `${AssetProxyId.ERC1155}${zeros96Bytes}`;
            // execute transfer
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                erc1155ProxyWrapper.transferFromAsync(
                    spender,
                    receiverContract,
@@ -1630,7 +1590,6 @@ describe('ERC1155Proxy', () => {
                    authorized,
                    assetData131Bytes,
                ),
                RevertReason.InvalidAssetDataLength,
            );
        });
        it('should transfer nothing if value is zero', async () => {
--- a/contracts/asset-proxy/test/proxies.ts
+++ b/contracts/asset-proxy/test/proxies.ts
@@ -23,7 +23,7 @@ import {
 } from '@0x/contracts-test-utils';
 import { BlockchainLifecycle } from '@0x/dev-utils';
 import { assetDataUtils } from '@0x/order-utils';
-import { RevertReason } from '@0x/types';
+import { AssetProxyId, RevertReason } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 import { LogWithDecodedArgs } from 'ethereum-types';
@@ -31,6 +31,7 @@ import * as _ from 'lodash';
 import {
    artifacts,
    ERC1155ProxyContract,
    ERC1155ProxyWrapper,
    ERC20ProxyContract,
    ERC20Wrapper,
@@ -71,7 +72,7 @@ describe('Asset Transfer Proxies', () => {
    let erc721AFromTokenId: BigNumber;
    let erc721BFromTokenId: BigNumber;
-    let erc1155Proxy: ERC721ProxyContract;
+    let erc1155Proxy: ERC1155ProxyContract;
    let erc1155ProxyWrapper: ERC1155ProxyWrapper;
    let erc1155Contract: ERC1155MintableContract;
    let erc1155Contract2: ERC1155MintableContract;
@@ -100,6 +101,7 @@ describe('Asset Transfer Proxies', () => {
            artifacts.MultiAssetProxy,
            provider,
            txDefaults,
            artifacts,
        );
        // Configure ERC20Proxy
@@ -172,6 +174,7 @@ describe('Asset Transfer Proxies', () => {
            erc20Artifacts.DummyNoReturnERC20Token,
            provider,
            txDefaults,
            artifacts,
            constants.DUMMY_TOKEN_NAME,
            constants.DUMMY_TOKEN_SYMBOL,
            constants.DUMMY_TOKEN_DECIMALS,
@@ -181,6 +184,7 @@ describe('Asset Transfer Proxies', () => {
            erc20Artifacts.DummyMultipleReturnERC20Token,
            provider,
            txDefaults,
            artifacts,
            constants.DUMMY_TOKEN_NAME,
            constants.DUMMY_TOKEN_SYMBOL,
            constants.DUMMY_TOKEN_DECIMALS,
@@ -223,6 +227,7 @@ describe('Asset Transfer Proxies', () => {
            erc721Artifacts.DummyERC721Receiver,
            provider,
            txDefaults,
            artifacts,
        );
        await erc721Wrapper.setBalancesAndAllowancesAsync();
@@ -1329,7 +1334,7 @@ describe('Asset Transfer Proxies', () => {
                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
                const amounts = [erc20Amount, erc721Amount];
                const nestedAssetData = [erc20AssetData, erc721AssetData];
-                const extraData = '0102030405060708';
+                const extraData = '0102030405060708090001020304050607080900010203040506070809000102';
                const assetData = `${assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData)}${extraData}`;
                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
                    assetData,
@@ -1624,6 +1629,120 @@ describe('Asset Transfer Proxies', () => {
                    RevertReason.SenderNotAuthorized,
                );
            });
            it('should revert if asset data overflows beyond the bounds of calldata', async () => {
                const inputAmount = new BigNumber(1);
                const erc20Amount = new BigNumber(10);
                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
                const erc721Amount = new BigNumber(1);
                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
                const amounts = [erc20Amount, erc721Amount];
                const nestedAssetData = [erc20AssetData, erc721AssetData];
                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
                    assetData,
                    fromAddress,
                    toAddress,
                    inputAmount,
                );
                // append asset data to end of tx data with a length of 0x300 bytes, which will extend past actual calldata.
                const offsetToAssetData = '0000000000000000000000000000000000000000000000000000000000000080';
                const invalidOffsetToAssetData = '00000000000000000000000000000000000000000000000000000000000002a0';
                const newAssetData = '0000000000000000000000000000000000000000000000000000000000000304';
                const badData = `${data.replace(offsetToAssetData, invalidOffsetToAssetData)}${newAssetData}`;
                // execute transfer
                await expectTransactionFailedAsync(
                    web3Wrapper.sendTransactionAsync({
                        to: multiAssetProxy.address,
                        data: badData,
                        from: authorized,
                    }),
                    RevertReason.InvalidAssetDataEnd,
                );
            });
            it('should revert if asset data resolves to a location beyond the bounds of calldata', async () => {
                const inputAmount = new BigNumber(1);
                const erc20Amount = new BigNumber(10);
                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
                const erc721Amount = new BigNumber(1);
                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
                const amounts = [erc20Amount, erc721Amount];
                const nestedAssetData = [erc20AssetData, erc721AssetData];
                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
                const data = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
                    assetData,
                    fromAddress,
                    toAddress,
                    inputAmount,
                );
                const offsetToAssetData = '0000000000000000000000000000000000000000000000000000000000000080';
                const invalidOffsetToAssetData = '0000000000000000000000000000000000000000000000000000000000000400';
                const badData = data.replace(offsetToAssetData, invalidOffsetToAssetData);
                // execute transfer
                // note that this triggers `InvalidAssetDataLength` because the length is zero, otherwise it would
                // trigger `InvalidAssetDataEnd`.
                await expectTransactionFailedAsync(
                    web3Wrapper.sendTransactionAsync({
                        to: multiAssetProxy.address,
                        data: badData,
                        from: authorized,
                    }),
                    RevertReason.InvalidAssetDataLength,
                );
            });
            it('should revert if length of assetData, excluding the selector, is not a multiple of 32', async () => {
                // setup test parameters
                const inputAmount = new BigNumber(1);
                const erc20Amount = new BigNumber(10);
                const erc20AssetData = assetDataUtils.encodeERC20AssetData(erc20TokenA.address);
                const erc721Amount = new BigNumber(1);
                const erc721AssetData = assetDataUtils.encodeERC721AssetData(erc721TokenA.address, erc721AFromTokenId);
                const amounts = [erc20Amount, erc721Amount];
                const nestedAssetData = [erc20AssetData, erc721AssetData];
                const assetData = assetDataUtils.encodeMultiAssetData(amounts, nestedAssetData);
                const extraData = '01';
                const assetDataWithExtraData = `${assetData}${extraData}`;
                const badData = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
                    assetDataWithExtraData,
                    fromAddress,
                    toAddress,
                    inputAmount,
                );
                // execute transfer
                await expectTransactionFailedAsync(
                    web3Wrapper.sendTransactionAsync({
                        to: multiAssetProxy.address,
                        data: badData,
                        from: authorized,
                    }),
                    RevertReason.InvalidAssetDataLength,
                );
            });
            it('should revert if length of assetData is less than 68 bytes', async () => {
                // setup test parameters
                const inputAmount = new BigNumber(1);
                // we'll construct asset data that has a 4 byte selector plus
                // 32 byte payload. This results in asset data that is 36 bytes
                // long and will trigger the `invalid length` error.
                // we must be sure to use a # of bytes that is still %32
                // so that we know the error is not triggered by another check in the code.
                const zeros32Bytes = '0'.repeat(64);
                const assetData36Bytes = `${AssetProxyId.MultiAsset}${zeros32Bytes}`;
                const badData = assetProxyInterface.transferFrom.getABIEncodedTransactionData(
                    assetData36Bytes,
                    fromAddress,
                    toAddress,
                    inputAmount,
                );
                // execute transfer
                await expectTransactionFailedAsync(
                    web3Wrapper.sendTransactionAsync({
                        to: multiAssetProxy.address,
                        data: badData,
                        from: authorized,
                    }),
                    RevertReason.InvalidAssetDataLength,
                );
            });
        });
    });
 });
--- a/contracts/asset-proxy/test/static_call_proxy.ts
+++ b/contracts/asset-proxy/test/static_call_proxy.ts
@@ -41,12 +41,14 @@ describe('StaticCallProxy', () => {
            artifacts.StaticCallProxy,
            provider,
            txDefaults,
            artifacts,
        );
        staticCallProxy = new IAssetProxyContract(staticCallProxyWithoutTransferFrom.address, provider, txDefaults);
        staticCallTarget = await TestStaticCallTargetContract.deployFrom0xArtifactAsync(
            artifacts.TestStaticCallTarget,
            provider,
            txDefaults,
            artifacts,
        );
    });
    beforeEach(async () => {
@@ -95,26 +97,12 @@ describe('StaticCallProxy', () => {
            const invalidOffsetToAssetData = ethUtil.bufferToHex(paddedTxDataEndBuffer).slice(2);
            const newAssetData = '0000000000000000000000000000000000000000000000000000000000000304';
            const badTxData = `${txData.replace(offsetToAssetData, invalidOffsetToAssetData)}${newAssetData}`;
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                web3Wrapper.sendTransactionAsync({
                    to: staticCallProxy.address,
                    from: fromAddress,
                    data: badTxData,
                }),
                RevertReason.InvalidAssetDataEnd,
            );
        });
        it('should revert if the length of assetData, excluding the proxyId, is not a multiple of 32', async () => {
            const staticCallData = staticCallTarget.noInputFunction.getABIEncodedTransactionData();
            const expectedResultHash = constants.KECCAK256_NULL;
            const assetData = `${assetDataUtils.encodeStaticCallAssetData(
                staticCallTarget.address,
                staticCallData,
                expectedResultHash,
            )}01`;
            await expectTransactionFailedAsync(
                staticCallProxy.transferFrom.sendTransactionAsync(assetData, fromAddress, toAddress, amount),
                RevertReason.InvalidAssetDataLength,
            );
        });
        it('should revert if the length of assetData is less than 100 bytes', async () => {
@@ -125,9 +113,8 @@ describe('StaticCallProxy', () => {
                .slice(0, -128);
            const assetDataByteLen = (assetData.length - 2) / 2;
            expect((assetDataByteLen - 4) % 32).to.equal(0);
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                staticCallProxy.transferFrom.sendTransactionAsync(assetData, fromAddress, toAddress, amount),
                RevertReason.InvalidAssetDataLength,
            );
        });
        it('should revert if the offset to `staticCallData` points to outside of assetData', async () => {
@@ -147,9 +134,8 @@ describe('StaticCallProxy', () => {
                offsetToStaticCallData,
                invalidOffsetToStaticCallData,
            )}${newStaticCallData}`;
-            await expectTransactionFailedAsync(
+            await expectTransactionFailedWithoutReasonAsync(
                staticCallProxy.transferFrom.sendTransactionAsync(badAssetData, fromAddress, toAddress, amount),
                RevertReason.InvalidStaticCallDataOffset,
            );
        });
        it('should revert if the callTarget attempts to write to state', async () => {
@@ -191,7 +177,7 @@ describe('StaticCallProxy', () => {
                RevertReason.UnexpectedStaticCallResult,
            );
        });
-        it('should be successful if a function call with no inputs is successful', async () => {
+        it('should be successful if a function call with no inputs and no outputs is successful', async () => {
            const staticCallData = staticCallTarget.noInputFunction.getABIEncodedTransactionData();
            const expectedResultHash = constants.KECCAK256_NULL;
            const assetData = assetDataUtils.encodeStaticCallAssetData(
@@ -201,6 +187,12 @@ describe('StaticCallProxy', () => {
            );
            await staticCallProxy.transferFrom.awaitTransactionSuccessAsync(assetData, fromAddress, toAddress, amount);
        });
        it('should be successful if the staticCallTarget is not a contract and no return value is expected', async () => {
            const staticCallData = '0x0102030405060708';
            const expectedResultHash = constants.KECCAK256_NULL;
            const assetData = assetDataUtils.encodeStaticCallAssetData(toAddress, staticCallData, expectedResultHash);
            await staticCallProxy.transferFrom.awaitTransactionSuccessAsync(assetData, fromAddress, toAddress, amount);
        });
        it('should be successful if a function call with one static input returns the correct value', async () => {
            const staticCallData = staticCallTarget.isOddNumber.getABIEncodedTransactionData(new BigNumber(1));
            const trueAsBuffer = ethUtil.toBuffer('0x0000000000000000000000000000000000000000000000000000000000000001');
--- a/contracts/asset-proxy/test/utils/erc1155_proxy_wrapper.ts
+++ b/contracts/asset-proxy/test/utils/erc1155_proxy_wrapper.ts
@@ -54,6 +54,7 @@ export class ERC1155ProxyWrapper {
                erc1155Artifacts.ERC1155Mintable,
                this._provider,
                txDefaults,
                artifacts,
            );
            const erc1155Wrapper = new Erc1155Wrapper(erc1155Contract, this._provider, this._contractOwnerAddress);
            this._dummyTokenWrappers.push(erc1155Wrapper);
@@ -69,6 +70,7 @@ export class ERC1155ProxyWrapper {
            artifacts.ERC1155Proxy,
            this._provider,
            txDefaults,
            artifacts,
        );
        this._proxyIdIfExists = await this._proxyContract.getProxyId.callAsync();
        return this._proxyContract;
--- a/contracts/asset-proxy/test/utils/erc20_wrapper.ts
+++ b/contracts/asset-proxy/test/utils/erc20_wrapper.ts
@@ -37,6 +37,7 @@ export class ERC20Wrapper {
                    erc20Artifacts.DummyERC20Token,
                    this._provider,
                    txDefaults,
                    artifacts,
                    constants.DUMMY_TOKEN_NAME,
                    constants.DUMMY_TOKEN_SYMBOL,
                    decimals,
@@ -51,6 +52,7 @@ export class ERC20Wrapper {
            artifacts.ERC20Proxy,
            this._provider,
            txDefaults,
            artifacts,
        );
        this._proxyIdIfExists = await this._proxyContract.getProxyId.callAsync();
        return this._proxyContract;
--- a/contracts/asset-proxy/test/utils/erc721_wrapper.ts
+++ b/contracts/asset-proxy/test/utils/erc721_wrapper.ts
@@ -29,6 +29,7 @@ export class ERC721Wrapper {
                    erc721Artifacts.DummyERC721Token,
                    this._provider,
                    txDefaults,
                    artifacts,
                    constants.DUMMY_TOKEN_NAME,
                    constants.DUMMY_TOKEN_SYMBOL,
                ),
@@ -41,6 +42,7 @@ export class ERC721Wrapper {
            artifacts.ERC721Proxy,
            this._provider,
            txDefaults,
            artifacts,
        );
        this._proxyIdIfExists = await this._proxyContract.getProxyId.callAsync();
        return this._proxyContract;
--- a/contracts/coordinator/CHANGELOG.json
+++ b/contracts/coordinator/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "2.0.13",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "2.0.12",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "2.0.11",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "2.0.10",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "2.0.9",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564607468
    },
    {
        "timestamp": 1563957393,
        "version": "2.0.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "2.0.7",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "2.0.6",
--- a/contracts/coordinator/CHANGELOG.md
+++ b/contracts/coordinator/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v2.0.13 - _September 17, 2019_
    * Dependencies updated
 ## v2.0.12 - _September 3, 2019_
    * Dependencies updated
 ## v2.0.11 - _August 22, 2019_
    * Dependencies updated
 ## v2.0.10 - _August 8, 2019_
    * Dependencies updated
 ## v2.0.9 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v2.0.8 - _July 24, 2019_
    * Dependencies updated
 ## v2.0.7 - _July 15, 2019_
    * Dependencies updated
 ## v2.0.6 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/coordinator/README.md
+++ b/contracts/coordinator/README.md
@@ -1,6 +1,6 @@
 ## Coordinator
-This package contains a contract that allows users to call arbitrary functions on the Exchange contract with permission from one or more Coordinators. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains a contract that allows users to call arbitrary functions on the Exchange contract with permission from one or more Coordinators. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-coordinator --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/coordinator/package.json
+++ b/contracts/coordinator/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-coordinator",
-    "version": "2.0.6",
+    "version": "2.0.13",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,20 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/extensions/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,18 +69,18 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-asset-proxy": "^2.2.1",
+        "@0x/contracts-asset-proxy": "^2.2.8",
-        "@0x/contracts-erc20": "^2.2.7",
+        "@0x/contracts-erc20": "^2.2.14",
-        "@0x/contracts-exchange": "^2.1.7",
+        "@0x/contracts-exchange": "^2.1.14",
-        "@0x/contracts-exchange-libs": "^3.0.1",
+        "@0x/contracts-exchange-libs": "^3.0.8",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/order-utils": "^8.2.1",
+        "@0x/order-utils": "^8.4.0",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "ethereumjs-util": "^5.1.1",
        "lodash": "^4.17.11"
    },
--- a/contracts/coordinator/test/coordinator.ts
+++ b/contracts/coordinator/test/coordinator.ts
@@ -74,6 +74,7 @@ describe('Coordinator tests', () => {
            exchangeArtifacts.Exchange,
            provider,
            txDefaults,
            artifacts,
            assetDataUtils.encodeERC20AssetData(zrxToken.address),
        );
@@ -91,6 +92,7 @@ describe('Coordinator tests', () => {
            artifacts.Coordinator,
            provider,
            txDefaults,
            artifacts,
            exchange.address,
        );
--- a/contracts/coordinator/test/libs.ts
+++ b/contracts/coordinator/test/libs.ts
@@ -25,6 +25,7 @@ describe('Libs tests', () => {
            artifacts.Coordinator,
            provider,
            txDefaults,
            artifacts,
            exchangeAddress,
        );
    });
--- a/contracts/coordinator/test/mixins.ts
+++ b/contracts/coordinator/test/mixins.ts
@@ -44,6 +44,7 @@ describe('Mixins tests', () => {
            artifacts.Coordinator,
            provider,
            txDefaults,
            artifacts,
            exchangeAddress,
        );
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
@@ -103,8 +104,7 @@ describe('Mixins tests', () => {
                transaction.signature.length - 2,
            )}${illegalSignatureByte}`;
            const transactionHash = transactionHashUtils.getTransactionHashHex(transaction);
-            expectContractCallFailedAsync(
+            expect(mixins.getSignerAddress.callAsync(transactionHash, transaction.signature)).to.be.rejectedWith(
                mixins.getSignerAddress.callAsync(transactionHash, transaction.signature),
                RevertReason.SignatureIllegal,
            );
        });
@@ -114,8 +114,7 @@ describe('Mixins tests', () => {
            const invalidSignatureByte = ethUtil.toBuffer(SignatureType.Invalid).toString('hex');
            transaction.signature = `0x${invalidSignatureByte}`;
            const transactionHash = transactionHashUtils.getTransactionHashHex(transaction);
-            expectContractCallFailedAsync(
+            expect(mixins.getSignerAddress.callAsync(transactionHash, transaction.signature)).to.be.rejectedWith(
                mixins.getSignerAddress.callAsync(transactionHash, transaction.signature),
                RevertReason.SignatureInvalid,
            );
        });
@@ -128,8 +127,7 @@ describe('Mixins tests', () => {
                transaction.signature.length - 2,
            )}${invalidSignatureByte}`;
            const transactionHash = transactionHashUtils.getTransactionHashHex(transaction);
-            expectContractCallFailedAsync(
+            expect(mixins.getSignerAddress.callAsync(transactionHash, transaction.signature)).to.be.rejectedWith(
                mixins.getSignerAddress.callAsync(transactionHash, transaction.signature),
                RevertReason.SignatureUnsupported,
            );
        });
@@ -192,8 +190,7 @@ describe('Mixins tests', () => {
        });
        it('should revert if data is less than 4 bytes long', async () => {
            const data = '0x010203';
-            await expectContractCallFailedAsync(
+            expect(mixins.decodeOrdersFromFillData.callAsync(data)).to.be.rejectedWith(
                mixins.decodeOrdersFromFillData.callAsync(data),
                RevertReason.LibBytesGreaterOrEqualTo4LengthRequired,
            );
        });
--- a/contracts/coordinator/test/utils/coordinator_registry_wrapper.ts
+++ b/contracts/coordinator/test/utils/coordinator_registry_wrapper.ts
@@ -24,6 +24,7 @@ export class CoordinatorRegistryWrapper {
            artifacts.CoordinatorRegistry,
            this._provider,
            txDefaults,
            artifacts,
        );
        if (this._coordinatorRegistryContract === undefined) {
            throw new Error(`Failed to deploy Coordinator Registry contract.`);
--- a/contracts/dev-utils/CHANGELOG.json
+++ b/contracts/dev-utils/CHANGELOG.json
@@ -1,4 +1,77 @@
 [
    {
        "timestamp": 1568744790,
        "version": "0.0.10",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "0.0.9",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "0.0.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "0.0.7",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1564607468,
        "version": "0.0.6",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "0.0.5",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564604963
    },
    {
        "timestamp": 1563957393,
        "version": "0.0.5",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "0.0.4",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "0.0.3",
--- a/contracts/dev-utils/CHANGELOG.md
+++ b/contracts/dev-utils/CHANGELOG.md
@@ -5,6 +5,38 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v0.0.10 - _September 17, 2019_
    * Dependencies updated
 ## v0.0.9 - _September 3, 2019_
    * Dependencies updated
 ## v0.0.8 - _August 22, 2019_
    * Dependencies updated
 ## v0.0.7 - _August 8, 2019_
    * Dependencies updated
 ## v0.0.6 - _July 31, 2019_
    * Dependencies updated
 ## v0.0.5 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v0.0.5 - _July 24, 2019_
    * Dependencies updated
 ## v0.0.4 - _July 15, 2019_
    * Dependencies updated
 ## v0.0.3 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/dev-utils/README.md
+++ b/contracts/dev-utils/README.md
@@ -1,6 +1,6 @@
 ## Dev-Utils
-This package implements various utilities for developers. For example, the `DevUtils` contract can query batches of balances or allowances given some `assetData`, can validate batches of orders, and can decode 0x-specific calldata. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package implements various utilities for developers. For example, the `DevUtils` contract can query batches of balances or allowances given some `assetData`, can validate batches of orders, and can decode 0x-specific calldata. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-dev-utils --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/dev-utils/package.json
+++ b/contracts/dev-utils/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-dev-utils",
-    "version": "0.0.3",
+    "version": "0.0.10",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,21 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/dev-utils/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contract-wrappers": "^9.1.6",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/sol-compiler": "^3.1.9",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -69,20 +69,20 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-asset-proxy": "^2.2.1",
+        "@0x/contracts-asset-proxy": "^2.2.8",
-        "@0x/contracts-erc1155": "^1.1.8",
+        "@0x/contracts-erc1155": "^1.1.15",
-        "@0x/contracts-erc20": "^2.2.7",
+        "@0x/contracts-erc20": "^2.2.14",
-        "@0x/contracts-erc721": "^2.1.8",
+        "@0x/contracts-erc721": "^2.1.15",
-        "@0x/contracts-exchange": "^2.1.7",
+        "@0x/contracts-exchange": "^2.1.14",
-        "@0x/contracts-exchange-libs": "^3.0.1",
+        "@0x/contracts-exchange-libs": "^3.0.8",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/order-utils": "^8.2.1",
+        "@0x/order-utils": "^8.4.0",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "ethereumjs-util": "^5.1.1"
    },
    "publishConfig": {
--- a/contracts/dev-utils/test/lib_asset_data.ts
+++ b/contracts/dev-utils/test/lib_asset_data.ts
@@ -92,6 +92,7 @@ describe('LibAssetData', () => {
            exchangeArtifacts.Exchange,
            provider,
            txDefaults,
            artifacts,
            constants.NULL_BYTES,
        );
@@ -99,26 +100,31 @@ describe('LibAssetData', () => {
            proxyArtifacts.ERC20Proxy,
            provider,
            txDefaults,
            artifacts,
        );
        erc721Proxy = await ERC721ProxyContract.deployFrom0xArtifactAsync(
            proxyArtifacts.ERC721Proxy,
            provider,
            txDefaults,
            artifacts,
        );
        erc1155Proxy = await ERC1155ProxyContract.deployFrom0xArtifactAsync(
            proxyArtifacts.ERC1155Proxy,
            provider,
            txDefaults,
            artifacts,
        );
        multiAssetProxy = await MultiAssetProxyContract.deployFrom0xArtifactAsync(
            proxyArtifacts.MultiAssetProxy,
            provider,
            txDefaults,
            artifacts,
        );
        staticCallProxy = await StaticCallProxyContract.deployFrom0xArtifactAsync(
            proxyArtifacts.StaticCallProxy,
            provider,
            txDefaults,
            artifacts,
        );
        await exchange.registerAssetProxy.awaitTransactionSuccessAsync(erc20Proxy.address);
@@ -131,6 +137,7 @@ describe('LibAssetData', () => {
            artifacts.LibAssetData,
            provider,
            txDefaults,
            artifacts,
            exchange.address,
        );
@@ -138,6 +145,7 @@ describe('LibAssetData', () => {
            proxyArtifacts.TestStaticCallTarget,
            provider,
            txDefaults,
            artifacts,
        );
        [tokenOwnerAddress] = await web3Wrapper.getAvailableAddressesAsync();
@@ -146,6 +154,7 @@ describe('LibAssetData', () => {
            erc20Artifacts.DummyERC20Token,
            provider,
            txDefaults,
            artifacts,
            'Dummy',
            'DUM',
            new BigNumber(1),
@@ -156,6 +165,7 @@ describe('LibAssetData', () => {
            erc721Artifacts.DummyERC721Token,
            provider,
            txDefaults,
            artifacts,
            'Dummy',
            'DUM',
        );
@@ -172,6 +182,7 @@ describe('LibAssetData', () => {
            erc1155Artifacts.ERC1155Mintable,
            provider,
            txDefaults,
            artifacts,
        );
        const logDecoder = new LogDecoder(web3Wrapper, erc1155Artifacts);
--- a/contracts/dev-utils/test/lib_transaction_decoder.ts
+++ b/contracts/dev-utils/test/lib_transaction_decoder.ts
@@ -37,6 +37,7 @@ describe('LibTransactionDecoder', () => {
            artifacts.LibTransactionDecoder,
            provider,
            txDefaults,
            artifacts,
        );
    });
    after(async () => {
--- a/contracts/dev-utils/test/order_validation_utils.ts
+++ b/contracts/dev-utils/test/order_validation_utils.ts
@@ -83,6 +83,7 @@ describe('OrderValidationUtils', () => {
            exchangeArtifacts.Exchange,
            provider,
            txDefaults,
            artifacts,
            zrxAssetData,
        );
@@ -90,6 +91,7 @@ describe('OrderValidationUtils', () => {
            proxyArtifacts.MultiAssetProxy,
            provider,
            txDefaults,
            artifacts,
        );
        const exchangeWrapper = new ExchangeWrapper(exchange, provider);
        await exchangeWrapper.registerAssetProxyAsync(erc20Proxy.address, owner);
@@ -102,6 +104,7 @@ describe('OrderValidationUtils', () => {
            artifacts.DevUtils,
            provider,
            txDefaults,
            artifacts,
            exchange.address,
            zrxAssetData,
        );
--- a/contracts/erc1155/CHANGELOG.json
+++ b/contracts/erc1155/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "1.1.15",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "1.1.14",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "1.1.13",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "1.1.12",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "1.1.11",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564604963
    },
    {
        "timestamp": 1563957393,
        "version": "1.1.10",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "1.1.9",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "1.1.8",
--- a/contracts/erc1155/CHANGELOG.md
+++ b/contracts/erc1155/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v1.1.15 - _September 17, 2019_
    * Dependencies updated
 ## v1.1.14 - _September 3, 2019_
    * Dependencies updated
 ## v1.1.13 - _August 22, 2019_
    * Dependencies updated
 ## v1.1.12 - _August 8, 2019_
    * Dependencies updated
 ## v1.1.11 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v1.1.10 - _July 24, 2019_
    * Dependencies updated
 ## v1.1.9 - _July 15, 2019_
    * Dependencies updated
 ## v1.1.8 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/erc1155/README.md
+++ b/contracts/erc1155/README.md
@@ -1,6 +1,6 @@
 ## ERC1155 Tokens
-This package contains implementations of various [ERC1155](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1155.md) tokens. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains implementations of various [ERC1155](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-1155.md) tokens. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-erc1155 --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/erc1155/package.json
+++ b/contracts/erc1155/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-erc1155",
-    "version": "1.1.8",
+    "version": "1.1.15",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,19 +47,20 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -67,14 +68,14 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "lodash": "^4.17.11"
    },
    "publishConfig": {
--- a/contracts/erc1155/test/erc1155_token.ts
+++ b/contracts/erc1155/test/erc1155_token.ts
@@ -60,11 +60,13 @@ describe('ERC1155Token', () => {
            artifacts.ERC1155Mintable,
            provider,
            txDefaults,
            artifacts,
        );
        erc1155Receiver = await DummyERC1155ReceiverContract.deployFrom0xArtifactAsync(
            artifacts.DummyERC1155Receiver,
            provider,
            txDefaults,
            artifacts,
        );
        receiver = erc1155Receiver.address;
        // create wrapper & mint erc1155 tokens
--- a/contracts/erc20/CHANGELOG.json
+++ b/contracts/erc20/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "2.2.14",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "2.2.13",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "2.2.12",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "2.2.11",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "2.2.10",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564604963
    },
    {
        "timestamp": 1563957393,
        "version": "2.2.9",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "2.2.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "2.2.7",
--- a/contracts/erc20/CHANGELOG.md
+++ b/contracts/erc20/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v2.2.14 - _September 17, 2019_
    * Dependencies updated
 ## v2.2.13 - _September 3, 2019_
    * Dependencies updated
 ## v2.2.12 - _August 22, 2019_
    * Dependencies updated
 ## v2.2.11 - _August 8, 2019_
    * Dependencies updated
 ## v2.2.10 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v2.2.9 - _July 24, 2019_
    * Dependencies updated
 ## v2.2.8 - _July 15, 2019_
    * Dependencies updated
 ## v2.2.7 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/erc20/README.md
+++ b/contracts/erc20/README.md
@@ -1,6 +1,6 @@
 ## ERC20 Tokens
-This package contains implementations of various [ERC20](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md) tokens, including WETH (Wrapped Ether) and ZRX. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains implementations of various [ERC20](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md) tokens, including WETH (Wrapped Ether) and ZRX. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-erc20 --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/erc20/package.json
+++ b/contracts/erc20/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-erc20",
-    "version": "2.2.7",
+    "version": "2.2.14",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,20 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,13 +69,13 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "lodash": "^4.17.11"
    },
    "publishConfig": {
--- a/contracts/erc20/test/unlimited_allowance_token.ts
+++ b/contracts/erc20/test/unlimited_allowance_token.ts
@@ -37,6 +37,7 @@ describe('UnlimitedAllowanceToken', () => {
            artifacts.DummyERC20Token,
            provider,
            txDefaults,
            artifacts,
            constants.DUMMY_TOKEN_NAME,
            constants.DUMMY_TOKEN_SYMBOL,
            constants.DUMMY_TOKEN_DECIMALS,
--- a/contracts/erc20/test/weth9.ts
+++ b/contracts/erc20/test/weth9.ts
@@ -33,10 +33,15 @@ describe('EtherToken', () => {
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
        account = accounts[0];
-        etherToken = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.WETH9, provider, {
+        etherToken = await WETH9Contract.deployFrom0xArtifactAsync(
-            gasPrice,
+            artifacts.WETH9,
-            ...txDefaults,
+            provider,
-        });
+            {
                gasPrice,
                ...txDefaults,
            },
            artifacts,
        );
    });
    beforeEach(async () => {
        await blockchainLifecycle.startAsync();
--- a/contracts/erc20/test/zrx_token.ts
+++ b/contracts/erc20/test/zrx_token.ts
@@ -26,7 +26,12 @@ describe('ZRXToken', () => {
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
        owner = accounts[0];
        spender = accounts[1];
-        zrxToken = await ZRXTokenContract.deployFrom0xArtifactAsync(artifacts.ZRXToken, provider, txDefaults);
+        zrxToken = await ZRXTokenContract.deployFrom0xArtifactAsync(
            artifacts.ZRXToken,
            provider,
            txDefaults,
            artifacts,
        );
        MAX_UINT = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
    });
    beforeEach(async () => {
--- a/contracts/erc721/CHANGELOG.json
+++ b/contracts/erc721/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "2.1.15",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "2.1.14",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "2.1.13",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "2.1.12",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "2.1.11",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564604963
    },
    {
        "timestamp": 1563957393,
        "version": "2.1.10",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "2.1.9",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "2.1.8",
--- a/contracts/erc721/CHANGELOG.md
+++ b/contracts/erc721/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v2.1.15 - _September 17, 2019_
    * Dependencies updated
 ## v2.1.14 - _September 3, 2019_
    * Dependencies updated
 ## v2.1.13 - _August 22, 2019_
    * Dependencies updated
 ## v2.1.12 - _August 8, 2019_
    * Dependencies updated
 ## v2.1.11 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v2.1.10 - _July 24, 2019_
    * Dependencies updated
 ## v2.1.9 - _July 15, 2019_
    * Dependencies updated
 ## v2.1.8 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/erc721/README.md
+++ b/contracts/erc721/README.md
@@ -1,6 +1,6 @@
 ## ERC721 Tokens
-This package contains implementations of various [ERC721](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md) tokens. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains implementations of various [ERC721](https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md) tokens. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-erc721 --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/erc721/package.json
+++ b/contracts/erc721/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-erc721",
-    "version": "2.1.8",
+    "version": "2.1.15",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,20 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/tokens/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,13 +69,13 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "lodash": "^4.17.11"
    },
    "publishConfig": {
--- a/contracts/erc721/test/erc721_token.ts
+++ b/contracts/erc721/test/erc721_token.ts
@@ -48,6 +48,7 @@ describe('ERC721Token', () => {
            artifacts.DummyERC721Token,
            provider,
            txDefaults,
            artifacts,
            constants.DUMMY_TOKEN_NAME,
            constants.DUMMY_TOKEN_SYMBOL,
        );
@@ -55,6 +56,7 @@ describe('ERC721Token', () => {
            artifacts.DummyERC721Receiver,
            provider,
            txDefaults,
            artifacts,
        );
        logDecoder = new LogDecoder(web3Wrapper, artifacts);
        await web3Wrapper.awaitTransactionSuccessAsync(
@@ -176,6 +178,7 @@ describe('ERC721Token', () => {
                artifacts.DummyERC721Token,
                provider,
                txDefaults,
                artifacts,
                constants.DUMMY_TOKEN_NAME,
                constants.DUMMY_TOKEN_SYMBOL,
            );
@@ -190,6 +193,7 @@ describe('ERC721Token', () => {
                artifacts.InvalidERC721Receiver,
                provider,
                txDefaults,
                artifacts,
            );
            const from = owner;
            const to = invalidErc721Receiver.address;
@@ -237,6 +241,7 @@ describe('ERC721Token', () => {
                artifacts.DummyERC721Token,
                provider,
                txDefaults,
                artifacts,
                constants.DUMMY_TOKEN_NAME,
                constants.DUMMY_TOKEN_SYMBOL,
            );
@@ -251,6 +256,7 @@ describe('ERC721Token', () => {
                artifacts.InvalidERC721Receiver,
                provider,
                txDefaults,
                artifacts,
            );
            const from = owner;
            const to = invalidErc721Receiver.address;
--- a/contracts/exchange-forwarder/CHANGELOG.json
+++ b/contracts/exchange-forwarder/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "3.0.12",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "3.0.11",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "3.0.10",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "3.0.9",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "3.0.8",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564607468
    },
    {
        "timestamp": 1563957393,
        "version": "3.0.7",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "3.0.6",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "3.0.5",
--- a/contracts/exchange-forwarder/CHANGELOG.md
+++ b/contracts/exchange-forwarder/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v3.0.12 - _September 17, 2019_
    * Dependencies updated
 ## v3.0.11 - _September 3, 2019_
    * Dependencies updated
 ## v3.0.10 - _August 22, 2019_
    * Dependencies updated
 ## v3.0.9 - _August 8, 2019_
    * Dependencies updated
 ## v3.0.8 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v3.0.7 - _July 24, 2019_
    * Dependencies updated
 ## v3.0.6 - _July 15, 2019_
    * Dependencies updated
 ## v3.0.5 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/exchange-forwarder/README.md
+++ b/contracts/exchange-forwarder/README.md
@@ -1,6 +1,6 @@
 ## Exchange Forwarder
-This package contains the implementation of the [`Forwarder`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/forwarder-specification.md) contract. This contract is intended to improve the UX of interacting with the 0x [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange) contract by abstracting user approvals, converting ETH to WETH, and paying fees. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains the implementation of the [`Forwarder`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/forwarder-specification.md) contract. This contract is intended to improve the UX of interacting with the 0x [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange) contract by abstracting user approvals, converting ETH to WETH, and paying fees. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-exchange-forwarder --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/exchange-forwarder/package.json
+++ b/contracts/exchange-forwarder/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-exchange-forwarder",
-    "version": "3.0.5",
+    "version": "3.0.12",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
        "coverage:report:html": "istanbul report html && open coverage/index.html",
@@ -46,21 +46,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/extensions/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contract-wrappers": "^9.1.6",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/sol-compiler": "^3.1.9",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,19 +68,19 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-asset-proxy": "^2.2.1",
+        "@0x/contracts-asset-proxy": "^2.2.8",
-        "@0x/contracts-erc20": "^2.2.7",
+        "@0x/contracts-erc20": "^2.2.14",
-        "@0x/contracts-erc721": "^2.1.8",
+        "@0x/contracts-erc721": "^2.1.15",
-        "@0x/contracts-exchange": "^2.1.7",
+        "@0x/contracts-exchange": "^2.1.14",
-        "@0x/contracts-exchange-libs": "^3.0.1",
+        "@0x/contracts-exchange-libs": "^3.0.8",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/order-utils": "^8.2.1",
+        "@0x/order-utils": "^8.4.0",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "lodash": "^4.17.11"
    },
    "publishConfig": {
--- a/contracts/exchange-forwarder/test/forwarder.ts
+++ b/contracts/exchange-forwarder/test/forwarder.ts
@@ -32,6 +32,7 @@ const DECIMALS_DEFAULT = 18;
 const MAX_WETH_FILL_PERCENTAGE = 95;
 describe(ContractName.Forwarder, () => {
    const dependencyArtifacts = { ...artifacts, ...erc20Artifacts, ...exchangeArtifacts };
    let makerAddress: string;
    let owner: string;
    let takerAddress: string;
@@ -88,7 +89,12 @@ describe(ContractName.Forwarder, () => {
        const erc721Balances = await erc721Wrapper.getBalancesAsync();
        erc721MakerAssetIds = erc721Balances[makerAddress][erc721Token.address];
-        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(erc20Artifacts.WETH9, provider, txDefaults);
+        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(
            erc20Artifacts.WETH9,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        weth = new DummyERC20TokenContract(wethContract.address, provider);
        erc20Wrapper.addDummyTokenContract(weth);
@@ -98,6 +104,7 @@ describe(ContractName.Forwarder, () => {
            exchangeArtifacts.Exchange,
            provider,
            txDefaults,
            dependencyArtifacts,
            zrxAssetData,
        );
        exchangeWrapper = new ExchangeWrapper(exchangeInstance, provider);
@@ -131,6 +138,7 @@ describe(ContractName.Forwarder, () => {
            artifacts.Forwarder,
            provider,
            txDefaults,
            dependencyArtifacts,
            exchangeInstance.address,
            zrxAssetData,
            wethAssetData,
@@ -169,6 +177,7 @@ describe(ContractName.Forwarder, () => {
                exchangeArtifacts.Exchange,
                provider,
                txDefaults,
                dependencyArtifacts,
                zrxAssetData,
            );
            return expectContractCreationFailedAsync(
@@ -176,6 +185,7 @@ describe(ContractName.Forwarder, () => {
                    artifacts.Forwarder,
                    provider,
                    txDefaults,
                    dependencyArtifacts,
                    exchangeInstance.address,
                    zrxAssetData,
                    wethAssetData,
--- a/contracts/exchange-libs/CHANGELOG.json
+++ b/contracts/exchange-libs/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "3.0.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "3.0.7",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "3.0.6",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "3.0.5",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "3.0.4",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564604963
    },
    {
        "timestamp": 1563957393,
        "version": "3.0.3",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "3.0.2",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "3.0.1",
--- a/contracts/exchange-libs/CHANGELOG.md
+++ b/contracts/exchange-libs/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v3.0.8 - _September 17, 2019_
    * Dependencies updated
 ## v3.0.7 - _September 3, 2019_
    * Dependencies updated
 ## v3.0.6 - _August 22, 2019_
    * Dependencies updated
 ## v3.0.5 - _August 8, 2019_
    * Dependencies updated
 ## v3.0.4 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v3.0.3 - _July 24, 2019_
    * Dependencies updated
 ## v3.0.2 - _July 15, 2019_
    * Dependencies updated
 ## v3.0.1 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/exchange-libs/README.md
+++ b/contracts/exchange-libs/README.md
@@ -1,6 +1,6 @@
 ## Exchange Libraries
-This package contains the implementations of various libraries and utilities used within the [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange) contract. These libraries may be useful when creating external contracts that interact with the `Exchange` contract. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains the implementations of various libraries and utilities used within the [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange) contract. These libraries may be useful when creating external contracts that interact with the `Exchange` contract. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
--- a/contracts/exchange-libs/package.json
+++ b/contracts/exchange-libs/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-exchange-libs",
-    "version": "3.0.1",
+    "version": "3.0.8",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,20 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/libs/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,14 +69,14 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/order-utils": "^8.2.1",
+        "@0x/order-utils": "^8.4.0",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "lodash": "^4.17.11"
    },
    "publishConfig": {
--- a/contracts/exchange-libs/test/exchange_libs.ts
+++ b/contracts/exchange-libs/test/exchange_libs.ts
@@ -35,7 +35,7 @@ describe('Exchange libs', () => {
    before(async () => {
        const accounts = await web3Wrapper.getAvailableAddressesAsync();
        const makerAddress = accounts[0];
-        libs = await TestLibsContract.deployFrom0xArtifactAsync(artifacts.TestLibs, provider, txDefaults);
+        libs = await TestLibsContract.deployFrom0xArtifactAsync(artifacts.TestLibs, provider, txDefaults, artifacts);
        const defaultOrderParams = {
            ...constants.STATIC_ORDER_PARAMS,
--- a/contracts/exchange/CHANGELOG.json
+++ b/contracts/exchange/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "2.1.14",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "2.1.13",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "2.1.12",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "2.1.11",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "2.1.10",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564607468
    },
    {
        "timestamp": 1563957393,
        "version": "2.1.9",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "2.1.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "2.1.7",
--- a/contracts/exchange/CHANGELOG.md
+++ b/contracts/exchange/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v2.1.14 - _September 17, 2019_
    * Dependencies updated
 ## v2.1.13 - _September 3, 2019_
    * Dependencies updated
 ## v2.1.12 - _August 22, 2019_
    * Dependencies updated
 ## v2.1.11 - _August 8, 2019_
    * Dependencies updated
 ## v2.1.10 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v2.1.9 - _July 24, 2019_
    * Dependencies updated
 ## v2.1.8 - _July 15, 2019_
    * Dependencies updated
 ## v2.1.7 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/exchange/README.md
+++ b/contracts/exchange/README.md
@@ -1,6 +1,6 @@
 ## Exchange
-This package contains the implementation of the [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange). This contract is responsible for settling trades and is typically the entry point for all transactions that interact with the 0x protocol. Lightweight examples of how external contracts can interct with the `Exchange` contract can be found in the [examples](./contracts/examples) directory. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains the implementation of the [`Exchange`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#exchange). This contract is responsible for settling trades and is typically the entry point for all transactions that interact with the 0x protocol. Lightweight examples of how external contracts can interct with the `Exchange` contract can be found in the [examples](./contracts/examples) directory. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-exchange --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/exchange/contracts/examples/Validator.sol
+++ b/contracts/exchange/contracts/examples/Validator.sol
@@ -21,7 +21,7 @@ pragma solidity ^0.5.5;
 import "../src/interfaces/IValidator.sol";
-contract Validator is 
+contract Validator is
    IValidator
 {
@@ -39,7 +39,7 @@ contract Validator is
    /// @param hash Message hash that is signed.
    /// @param signerAddress Address that should have signed the given hash.
    /// @param signature Proof of signing.
-    /// @return Validity of signature.
+    /// @return Returns a known magic value if the signature is valid.
    // solhint-disable no-unused-vars
    function isValidSignature(
        bytes32 hash,
@@ -48,9 +48,11 @@ contract Validator is
    )
        external
        view
-        returns (bool isValid)
+        returns (bytes4)
    {
-        return (signerAddress == VALID_SIGNER);
+        require(signerAddress == VALID_SIGNER, "INVALID_SIGNER");
        bytes4 magicValue = bytes4(keccak256("isValidValidatorSignature(address,bytes32,address,bytes)"));
        return magicValue;
    }
    // solhint-enable no-unused-vars
 }
--- a/contracts/exchange/contracts/examples/Wallet.sol
+++ b/contracts/exchange/contracts/examples/Wallet.sol
@@ -22,7 +22,7 @@ import "../src/interfaces/IWallet.sol";
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
-contract Wallet is 
+contract Wallet is
    IWallet
 {
    using LibBytes for bytes;
@@ -41,14 +41,14 @@ contract Wallet is
    ///      The signer must match the owner of this wallet.
    /// @param hash Message hash that is signed.
    /// @param eip712Signature Proof of signing.
-    /// @return Validity of signature.
+    /// @return Returns a known magic value if the signature is valid.
    function isValidSignature(
        bytes32 hash,
        bytes calldata eip712Signature
    )
        external
        view
-        returns (bool isValid)
+        returns (bytes4)
    {
        require(
            eip712Signature.length == 65,
@@ -59,7 +59,8 @@ contract Wallet is
        bytes32 r = eip712Signature.readBytes32(1);
        bytes32 s = eip712Signature.readBytes32(33);
        address recoveredAddress = ecrecover(hash, v, r, s);
-        isValid = WALLET_OWNER == recoveredAddress;
+        require(WALLET_OWNER == recoveredAddress, "INVALID_SIGNATURE");
-        return isValid;
+        bytes4 magicValue = bytes4(keccak256("isValidWalletSignature(bytes32,address,bytes)"));
        return magicValue;
    }
 }
--- a/contracts/exchange/contracts/examples/Whitelist.sol
+++ b/contracts/exchange/contracts/examples/Whitelist.sol
@@ -73,10 +73,12 @@ contract Whitelist is
    )
        external
        view
-        returns (bool isValid)
+        returns (bytes4)
    {
        // solhint-disable-next-line avoid-tx-origin
-        return signerAddress == tx.origin;
+        require(signerAddress == tx.origin, "INVALID_SIGNER");
        bytes4 magicValue = bytes4(keccak256("isValidValidatorSignature(address,bytes32,address,bytes)"));
        return magicValue;
    }
    // solhint-enable no-unused-vars
--- a/contracts/exchange/contracts/src/MixinSignatureValidator.sol
+++ b/contracts/exchange/contracts/src/MixinSignatureValidator.sol
@@ -32,7 +32,7 @@ contract MixinSignatureValidator is
    MTransactions
 {
    using LibBytes for bytes;
-    
+
    // Mapping of hash => signer => signed
    mapping (bytes32 => mapping (address => bool)) public preSigned;
@@ -197,7 +197,7 @@ contract MixinSignatureValidator is
        } else if (signatureType == SignatureType.Validator) {
            // Pop last 20 bytes off of signature byte array.
            address validatorAddress = signature.popLast20Bytes();
-            
+
            // Ensure signer has approved validator.
            if (!allowedValidators[signerAddress][validatorAddress]) {
                return false;
@@ -224,7 +224,8 @@ contract MixinSignatureValidator is
        revert("SIGNATURE_UNSUPPORTED");
    }
-    /// @dev Verifies signature using logic defined by Wallet contract.
+    /// @dev Verifies signature using logic defined by Wallet contract. Wallet contract
    ///      must return `bytes4(keccak256("isValidWalletSignature(bytes32,address,bytes)"))`
    /// @param hash Any 32 byte hash.
    /// @param walletAddress Address that should have signed the given hash
    ///                      and defines its own signature verification method.
@@ -244,7 +245,19 @@ contract MixinSignatureValidator is
            hash,
            signature
        );
        // bytes4 0xb0671381
        bytes32 magicValue = bytes32(bytes4(keccak256("isValidWalletSignature(bytes32,address,bytes)")));
        assembly {
            // extcodesize added as an extra safety measure
            if iszero(extcodesize(walletAddress)) {
                // Revert with `Error("WALLET_ERROR")`
                mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                mstore(64, 0x0000000c57414c4c45545f4552524f5200000000000000000000000000000000)
                mstore(96, 0)
                revert(0, 100)
            }
            let cdStart := add(callData, 32)
            let success := staticcall(
                gas,              // forward all gas
@@ -255,6 +268,15 @@ contract MixinSignatureValidator is
                32                // output size is 32 bytes
            )
            if iszero(eq(returndatasize(), 32)) {
                // Revert with `Error("WALLET_ERROR")`
                mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                mstore(64, 0x0000000c57414c4c45545f4552524f5200000000000000000000000000000000)
                mstore(96, 0)
                revert(0, 100)
            }
            switch success
            case 0 {
                // Revert with `Error("WALLET_ERROR")`
@@ -266,13 +288,17 @@ contract MixinSignatureValidator is
            }
            case 1 {
                // Signature is valid if call did not revert and returned true
-                isValid := mload(cdStart)
+                isValid := eq(
                    and(mload(cdStart), 0xffffffff00000000000000000000000000000000000000000000000000000000),
                    and(magicValue, 0xffffffff00000000000000000000000000000000000000000000000000000000)
                )
            }
        }
        return isValid;
    }
    /// @dev Verifies signature using logic defined by Validator contract.
    ///      Validator must return `bytes4(keccak256("isValidValidatorSignature(address,bytes32,address,bytes)"))`
    /// @param validatorAddress Address of validator contract.
    /// @param hash Any 32 byte hash.
    /// @param signerAddress Address that should have signed the given hash.
@@ -294,7 +320,19 @@ contract MixinSignatureValidator is
            signerAddress,
            signature
        );
        // bytes4 0x42b38674
        bytes32 magicValue = bytes32(bytes4(keccak256("isValidValidatorSignature(address,bytes32,address,bytes)")));
        assembly {
            // extcodesize added as an extra safety measure
            if iszero(extcodesize(validatorAddress)) {
                // Revert with `Error("VALIDATOR_ERROR")`
                mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                mstore(64, 0x0000000f56414c494441544f525f4552524f5200000000000000000000000000)
                mstore(96, 0)
                revert(0, 100)
            }
            let cdStart := add(callData, 32)
            let success := staticcall(
                gas,               // forward all gas
@@ -305,6 +343,15 @@ contract MixinSignatureValidator is
                32                 // output size is 32 bytes
            )
            if iszero(eq(returndatasize(), 32)) {
                // Revert with `Error("VALIDATOR_ERROR")`
                mstore(0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
                mstore(32, 0x0000002000000000000000000000000000000000000000000000000000000000)
                mstore(64, 0x0000000f56414c494441544f525f4552524f5200000000000000000000000000)
                mstore(96, 0)
                revert(0, 100)
            }
            switch success
            case 0 {
                // Revert with `Error("VALIDATOR_ERROR")`
@@ -316,7 +363,10 @@ contract MixinSignatureValidator is
            }
            case 1 {
                // Signature is valid if call did not revert and returned true
-                isValid := mload(cdStart)
+                isValid := eq(
                    and(mload(cdStart), 0xffffffff00000000000000000000000000000000000000000000000000000000),
                    and(magicValue, 0xffffffff00000000000000000000000000000000000000000000000000000000)
                )
            }
        }
        return isValid;
--- a/contracts/exchange/contracts/src/interfaces/IValidator.sol
+++ b/contracts/exchange/contracts/src/interfaces/IValidator.sol
@@ -25,7 +25,8 @@ contract IValidator {
    /// @param hash Message hash that is signed.
    /// @param signerAddress Address that should have signed the given hash.
    /// @param signature Proof of signing.
-    /// @return Validity of order signature.
+    /// @return Magic bytes4 value if the signature is valid.
    ///         Magic value is bytes4(keccak256("isValidValidatorSignature(address,bytes32,address,bytes)"))
    function isValidSignature(
        bytes32 hash,
        address signerAddress,
@@ -33,5 +34,5 @@ contract IValidator {
    )
        external
        view
-        returns (bool isValid);
+        returns (bytes4);
 }
--- a/contracts/exchange/contracts/src/interfaces/IWallet.sol
+++ b/contracts/exchange/contracts/src/interfaces/IWallet.sol
@@ -24,12 +24,13 @@ contract IWallet {
    /// @dev Verifies that a signature is valid.
    /// @param hash Message hash that is signed.
    /// @param signature Proof of signing.
-    /// @return Validity of order signature.
+    /// @return Magic bytes4 value if the signature is valid.
    ///         Magic value is bytes4(keccak256("isValidWalletSignature(bytes32,address,bytes)"))
    function isValidSignature(
        bytes32 hash,
        bytes calldata signature
    )
        external
        view
-        returns (bool isValid);
+        returns (bytes4);
 }
--- a/contracts/exchange/package.json
+++ b/contracts/exchange/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-exchange",
-    "version": "2.1.7",
+    "version": "2.1.14",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,20 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/protocol/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,19 +69,19 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-asset-proxy": "^2.2.1",
+        "@0x/contracts-asset-proxy": "^2.2.8",
-        "@0x/contracts-erc1155": "^1.1.8",
+        "@0x/contracts-erc1155": "^1.1.15",
-        "@0x/contracts-erc20": "^2.2.7",
+        "@0x/contracts-erc20": "^2.2.14",
-        "@0x/contracts-erc721": "^2.1.8",
+        "@0x/contracts-erc721": "^2.1.15",
-        "@0x/contracts-exchange-libs": "^3.0.1",
+        "@0x/contracts-exchange-libs": "^3.0.8",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/order-utils": "^8.2.1",
+        "@0x/order-utils": "^8.4.0",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "ethereumjs-util": "^5.1.1",
        "lodash": "^4.17.11"
    },
--- a/contracts/exchange/test/core.ts
+++ b/contracts/exchange/test/core.ts
@@ -1,5 +1,6 @@
 import {
    artifacts as proxyArtifacts,
    ERC1155ProxyContract,
    ERC1155ProxyWrapper,
    ERC20ProxyContract,
    ERC20Wrapper,
@@ -50,6 +51,8 @@ import {
    TestStaticCallReceiverContract,
 } from '../src';
 import { dependencyArtifacts } from './utils/dependency_artifacts';
 chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
@@ -69,7 +72,7 @@ describe('Exchange core', () => {
    let exchange: ExchangeContract;
    let erc20Proxy: ERC20ProxyContract;
    let erc721Proxy: ERC721ProxyContract;
-    let erc1155Proxy: ERC721ProxyContract;
+    let erc1155Proxy: ERC1155ProxyContract;
    let multiAssetProxy: MultiAssetProxyContract;
    let staticCallProxy: StaticCallProxyContract;
    let staticCallTarget: TestStaticCallTargetContract;
@@ -116,11 +119,13 @@ describe('Exchange core', () => {
            proxyArtifacts.MultiAssetProxy,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        staticCallProxy = await StaticCallProxyContract.deployFrom0xArtifactAsync(
            proxyArtifacts.StaticCallProxy,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        const numDummyErc20ToDeploy = 3;
        [erc20TokenA, erc20TokenB, zrxToken] = await erc20Wrapper.deployDummyTokensAsync(
@@ -135,17 +140,20 @@ describe('Exchange core', () => {
            artifacts.Exchange,
            provider,
            txDefaults,
            dependencyArtifacts,
            assetDataUtils.encodeERC20AssetData(zrxToken.address),
        );
        maliciousWallet = maliciousValidator = await TestStaticCallReceiverContract.deployFrom0xArtifactAsync(
            artifacts.TestStaticCallReceiver,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        reentrantErc20Token = await ReentrantERC20TokenContract.deployFrom0xArtifactAsync(
            artifacts.ReentrantERC20Token,
            provider,
            txDefaults,
            dependencyArtifacts,
            exchange.address,
        );
@@ -348,6 +356,7 @@ describe('Exchange core', () => {
                erc20Artifacts.DummyNoReturnERC20Token,
                provider,
                txDefaults,
                dependencyArtifacts,
                constants.DUMMY_TOKEN_NAME,
                constants.DUMMY_TOKEN_SYMBOL,
                constants.DUMMY_TOKEN_DECIMALS,
@@ -1473,6 +1482,7 @@ describe('Exchange core', () => {
                proxyArtifacts.TestStaticCallTarget,
                provider,
                txDefaults,
                dependencyArtifacts,
            );
        });
        it('should revert if the staticcall is unsuccessful', async () => {
--- a/contracts/exchange/test/dispatcher.ts
+++ b/contracts/exchange/test/dispatcher.ts
@@ -29,6 +29,8 @@ import {
    TestAssetProxyDispatcherContract,
 } from '../src';
 import { dependencyArtifacts } from './utils/dependency_artifacts';
 chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
@@ -72,6 +74,7 @@ describe('AssetProxyDispatcher', () => {
            artifacts.TestAssetProxyDispatcher,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        await web3Wrapper.awaitTransactionSuccessAsync(
            await erc20Proxy.addAuthorizedAddress.sendTransactionAsync(assetProxyDispatcher.address, {
@@ -134,6 +137,7 @@ describe('AssetProxyDispatcher', () => {
                proxyArtifacts.ERC20Proxy,
                provider,
                txDefaults,
                dependencyArtifacts,
            );
            // Register new ERC20 Transfer Proxy contract
            return expectTransactionFailedAsync(
--- a/contracts/exchange/test/internal.ts
+++ b/contracts/exchange/test/internal.ts
@@ -18,6 +18,8 @@ import * as _ from 'lodash';
 import { artifacts, TestExchangeInternalsContract } from '../src';
 import { dependencyArtifacts } from './utils/dependency_artifacts';
 chaiSetup.configure();
 const expect = chai.expect;
@@ -65,6 +67,7 @@ describe('Exchange core internal functions', () => {
            artifacts.TestExchangeInternals,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        overflowErrorForSendTransaction = new Error(
            await getRevertReasonOrErrorMessageForSendTransactionAsync(RevertReason.Uint256Overflow),
--- a/contracts/exchange/test/match_orders.ts
+++ b/contracts/exchange/test/match_orders.ts
@@ -29,6 +29,8 @@ import {
    TestExchangeInternalsContract,
 } from '../src';
 import { dependencyArtifacts } from './utils/dependency_artifacts';
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 chaiSetup.configure();
 const expect = chai.expect;
@@ -118,6 +120,7 @@ describe('matchOrders', () => {
            artifacts.Exchange,
            provider,
            txDefaults,
            dependencyArtifacts,
            assetDataUtils.encodeERC20AssetData(zrxToken.address),
        );
        exchangeWrapper = new ExchangeWrapper(exchange, provider);
@@ -141,6 +144,7 @@ describe('matchOrders', () => {
            artifacts.ReentrantERC20Token,
            provider,
            txDefaults,
            dependencyArtifacts,
            exchange.address,
        );
@@ -175,6 +179,7 @@ describe('matchOrders', () => {
            artifacts.TestExchangeInternals,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
    });
    beforeEach(async () => {
--- a/contracts/exchange/test/signature_validator.ts
+++ b/contracts/exchange/test/signature_validator.ts
@@ -25,6 +25,8 @@ import {
    WalletContract,
 } from '../src';
 import { dependencyArtifacts } from './utils/dependency_artifacts';
 chaiSetup.configure();
 const expect = chai.expect;
@@ -59,23 +61,27 @@ describe('MixinSignatureValidator', () => {
            artifacts.TestSignatureValidator,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        testWallet = await WalletContract.deployFrom0xArtifactAsync(
            artifacts.Wallet,
            provider,
            txDefaults,
            dependencyArtifacts,
            signerAddress,
        );
        testValidator = await ValidatorContract.deployFrom0xArtifactAsync(
            artifacts.Validator,
            provider,
            txDefaults,
            dependencyArtifacts,
            signerAddress,
        );
        maliciousWallet = maliciousValidator = await TestStaticCallReceiverContract.deployFrom0xArtifactAsync(
            artifacts.TestStaticCallReceiver,
            provider,
            txDefaults,
            dependencyArtifacts,
        );
        signatureValidatorLogDecoder = new LogDecoder(web3Wrapper, artifacts);
        await web3Wrapper.awaitTransactionSuccessAsync(
@@ -94,6 +100,12 @@ describe('MixinSignatureValidator', () => {
            ),
            constants.AWAIT_TRANSACTION_MINED_MS,
        );
        await web3Wrapper.awaitTransactionSuccessAsync(
            await signatureValidator.setSignatureValidatorApproval.sendTransactionAsync(testValidator.address, true, {
                from: notSignerAddress,
            }),
            constants.AWAIT_TRANSACTION_MINED_MS,
        );
        const defaultOrderParams = {
            ...constants.STATIC_ORDER_PARAMS,
@@ -301,7 +313,7 @@ describe('MixinSignatureValidator', () => {
            expect(isValidSignature).to.be.true();
        });
-        it('should return false when SignatureType=Wallet and signature is invalid', async () => {
+        it('should revert when SignatureType=Wallet and signature is invalid', async () => {
            // Create EIP712 signature using a private key that does not belong to the wallet owner.
            const orderHashHex = orderHashUtils.getOrderHashHex(signedOrder);
            const orderHashBuffer = ethUtil.toBuffer(orderHashHex);
@@ -316,12 +328,10 @@ describe('MixinSignatureValidator', () => {
            ]);
            const signatureHex = ethUtil.bufferToHex(signature);
            // Validate signature
-            const isValidSignature = await signatureValidator.publicIsValidSignature.callAsync(
+            return expectContractCallFailedAsync(
-                orderHashHex,
+                signatureValidator.publicIsValidSignature.callAsync(orderHashHex, testWallet.address, signatureHex),
-                testWallet.address,
+                RevertReason.WalletError,
                signatureHex,
            );
            expect(isValidSignature).to.be.false();
        });
        it('should revert when `isValidSignature` attempts to update state and SignatureType=Wallet', async () => {
@@ -359,6 +369,15 @@ describe('MixinSignatureValidator', () => {
                signatureHex,
            );
            expect(isValidSignature).to.be.true();
            const isValidSignatureTs = await signatureUtils.isValidSignatureAsync(
                provider,
                orderHashHex,
                signatureHex,
                signerAddress,
                signatureValidator.address,
            );
            expect(isValidSignatureTs).to.be.true();
        });
        it('should return false when SignatureType=Validator, signature is invalid and validator is approved', async () => {
@@ -369,12 +388,19 @@ describe('MixinSignatureValidator', () => {
            const orderHashHex = orderHashUtils.getOrderHashHex(signedOrder);
            // This will return false because we signed the message with `signerAddress`, but
            // are validating against `notSignerAddress`
-            const isValidSignature = await signatureValidator.publicIsValidSignature.callAsync(
+            await expectContractCallFailedAsync(
-                orderHashHex,
+                signatureValidator.publicIsValidSignature.callAsync(orderHashHex, notSignerAddress, signatureHex),
-                notSignerAddress,
+                RevertReason.ValidatorError,
                signatureHex,
            );
-            expect(isValidSignature).to.be.false();
+
            const isValidSignatureTs = await signatureUtils.isValidSignatureAsync(
                provider,
                orderHashHex,
                signatureHex,
                notSignerAddress,
                signatureValidator.address,
            );
            expect(isValidSignatureTs).to.be.false();
        });
        it('should revert when `isValidSignature` attempts to update state and SignatureType=Validator', async () => {
@@ -410,6 +436,16 @@ describe('MixinSignatureValidator', () => {
                signatureHex,
            );
            expect(isValidSignature).to.be.false();
            expect(
                signatureUtils.isValidSignatureAsync(
                    provider,
                    orderHashHex,
                    signatureHex,
                    signerAddress,
                    signatureValidator.address,
                ),
            ).to.be.rejected();
        });
        it('should return true when SignatureType=Presigned and signer has presigned hash', async () => {
--- a/contracts/exchange/test/transactions.ts
+++ b/contracts/exchange/test/transactions.ts
@@ -21,6 +21,8 @@ import * as _ from 'lodash';
 import { artifacts, ExchangeContract, ExchangeWrapper, ExchangeWrapperContract, WhitelistContract } from '../src/';
 import { dependencyArtifacts } from './utils/dependency_artifacts';
 chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
@@ -87,6 +89,7 @@ describe('Exchange transactions', () => {
            artifacts.Exchange,
            provider,
            txDefaults,
            dependencyArtifacts,
            assetDataUtils.encodeERC20AssetData(zrxToken.address),
        );
        exchangeWrapper = new ExchangeWrapper(exchange, provider);
@@ -219,6 +222,7 @@ describe('Exchange transactions', () => {
                    artifacts.ExchangeWrapper,
                    provider,
                    txDefaults,
                    dependencyArtifacts,
                    exchange.address,
                );
            });
@@ -333,6 +337,7 @@ describe('Exchange transactions', () => {
                artifacts.Whitelist,
                provider,
                txDefaults,
                dependencyArtifacts,
                exchange.address,
            );
            const isApproved = true;
--- a/contracts/exchange/test/utils/dependency_artifacts.ts
+++ b/contracts/exchange/test/utils/dependency_artifacts.ts
@@ -0,0 +1,9 @@
 import { artifacts as erc1155Artifacts } from '@0x/contracts-erc1155';
 import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
 import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
 export const dependencyArtifacts = {
    ...erc20Artifacts,
    ...erc721Artifacts,
    ...erc1155Artifacts,
 };
--- a/contracts/exchange/test/utils/exchange_wrapper.ts
+++ b/contracts/exchange/test/utils/exchange_wrapper.ts
@@ -1,37 +1,21 @@
-import { artifacts as erc1155Artifacts } from '@0x/contracts-erc1155';
+import { FillResults, formatters, OrderInfo, orderUtils, Web3ProviderEngine } from '@0x/contracts-test-utils';
 import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
 import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
 import {
    FillResults,
    formatters,
    LogDecoder,
    OrderInfo,
    orderUtils,
    Web3ProviderEngine,
 } from '@0x/contracts-test-utils';
 import { SignedOrder, SignedZeroExTransaction } from '@0x/types';
 import { AbiEncoder, BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import { MethodAbi, TransactionReceiptWithDecodedLogs, ZeroExProvider } from 'ethereum-types';
 import * as _ from 'lodash';
-import { artifacts, ExchangeContract } from '../../src';
+import { ExchangeContract } from '../../src';
 import { AbiDecodedFillOrderData } from './types';
 export class ExchangeWrapper {
    private readonly _exchange: ExchangeContract;
    // tslint:disable no-unused-variable
    private readonly _web3Wrapper: Web3Wrapper;
    private readonly _logDecoder: LogDecoder;
    constructor(exchangeContract: ExchangeContract, provider: Web3ProviderEngine | ZeroExProvider) {
        this._exchange = exchangeContract;
        this._web3Wrapper = new Web3Wrapper(provider);
        this._logDecoder = new LogDecoder(this._web3Wrapper, {
            ...artifacts,
            ...erc20Artifacts,
            ...erc721Artifacts,
            ...erc1155Artifacts,
        });
    }
    public async fillOrderAsync(
        signedOrder: SignedOrder,
@@ -39,20 +23,18 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmount?: BigNumber } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = orderUtils.createFill(signedOrder, opts.takerAssetFillAmount);
-        const txHash = await this._exchange.fillOrder.sendTransactionAsync(
+        const txReceipt = await this._exchange.fillOrder.awaitTransactionSuccessAsync(
            params.order,
            params.takerAssetFillAmount,
            params.signature,
            { from },
        );
        const txReceipt = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
        return txReceipt;
    }
    public async cancelOrderAsync(signedOrder: SignedOrder, from: string): Promise<TransactionReceiptWithDecodedLogs> {
        const params = orderUtils.createCancel(signedOrder);
-        const txHash = await this._exchange.cancelOrder.sendTransactionAsync(params.order, { from });
+        const txReceipt = await this._exchange.cancelOrder.awaitTransactionSuccessAsync(params.order, { from });
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async fillOrKillOrderAsync(
        signedOrder: SignedOrder,
@@ -60,14 +42,13 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmount?: BigNumber } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = orderUtils.createFill(signedOrder, opts.takerAssetFillAmount);
-        const txHash = await this._exchange.fillOrKillOrder.sendTransactionAsync(
+        const txReceipt = await this._exchange.fillOrKillOrder.awaitTransactionSuccessAsync(
            params.order,
            params.takerAssetFillAmount,
            params.signature,
            { from },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async fillOrderNoThrowAsync(
        signedOrder: SignedOrder,
@@ -75,14 +56,13 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmount?: BigNumber; gas?: number } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = orderUtils.createFill(signedOrder, opts.takerAssetFillAmount);
-        const txHash = await this._exchange.fillOrderNoThrow.sendTransactionAsync(
+        const txReceipt = await this._exchange.fillOrderNoThrow.awaitTransactionSuccessAsync(
            params.order,
            params.takerAssetFillAmount,
            params.signature,
            { from, gas: opts.gas },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async batchFillOrdersAsync(
        orders: SignedOrder[],
@@ -90,14 +70,13 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmounts?: BigNumber[] } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createBatchFill(orders, opts.takerAssetFillAmounts);
-        const txHash = await this._exchange.batchFillOrders.sendTransactionAsync(
+        const txReceipt = await this._exchange.batchFillOrders.awaitTransactionSuccessAsync(
            params.orders,
            params.takerAssetFillAmounts,
            params.signatures,
            { from },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async batchFillOrKillOrdersAsync(
        orders: SignedOrder[],
@@ -105,14 +84,13 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmounts?: BigNumber[] } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createBatchFill(orders, opts.takerAssetFillAmounts);
-        const txHash = await this._exchange.batchFillOrKillOrders.sendTransactionAsync(
+        const txReceipt = await this._exchange.batchFillOrKillOrders.awaitTransactionSuccessAsync(
            params.orders,
            params.takerAssetFillAmounts,
            params.signatures,
            { from },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async batchFillOrdersNoThrowAsync(
        orders: SignedOrder[],
@@ -120,14 +98,13 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmounts?: BigNumber[]; gas?: number } = {},
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createBatchFill(orders, opts.takerAssetFillAmounts);
-        const txHash = await this._exchange.batchFillOrdersNoThrow.sendTransactionAsync(
+        const txReceipt = await this._exchange.batchFillOrdersNoThrow.awaitTransactionSuccessAsync(
            params.orders,
            params.takerAssetFillAmounts,
            params.signatures,
            { from, gas: opts.gas },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async marketSellOrdersAsync(
        orders: SignedOrder[],
@@ -135,14 +112,13 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmount: BigNumber },
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createMarketSellOrders(orders, opts.takerAssetFillAmount);
-        const txHash = await this._exchange.marketSellOrders.sendTransactionAsync(
+        const txReceipt = await this._exchange.marketSellOrders.awaitTransactionSuccessAsync(
            params.orders,
            params.takerAssetFillAmount,
            params.signatures,
            { from },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async marketSellOrdersNoThrowAsync(
        orders: SignedOrder[],
@@ -150,14 +126,13 @@ export class ExchangeWrapper {
        opts: { takerAssetFillAmount: BigNumber; gas?: number },
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createMarketSellOrders(orders, opts.takerAssetFillAmount);
-        const txHash = await this._exchange.marketSellOrdersNoThrow.sendTransactionAsync(
+        const txReceipt = await this._exchange.marketSellOrdersNoThrow.awaitTransactionSuccessAsync(
            params.orders,
            params.takerAssetFillAmount,
            params.signatures,
            { from, gas: opts.gas },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async marketBuyOrdersAsync(
        orders: SignedOrder[],
@@ -165,14 +140,13 @@ export class ExchangeWrapper {
        opts: { makerAssetFillAmount: BigNumber },
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createMarketBuyOrders(orders, opts.makerAssetFillAmount);
-        const txHash = await this._exchange.marketBuyOrders.sendTransactionAsync(
+        const txReceipt = await this._exchange.marketBuyOrders.awaitTransactionSuccessAsync(
            params.orders,
            params.makerAssetFillAmount,
            params.signatures,
            { from },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async marketBuyOrdersNoThrowAsync(
        orders: SignedOrder[],
@@ -180,50 +154,47 @@ export class ExchangeWrapper {
        opts: { makerAssetFillAmount: BigNumber; gas?: number },
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createMarketBuyOrders(orders, opts.makerAssetFillAmount);
-        const txHash = await this._exchange.marketBuyOrdersNoThrow.sendTransactionAsync(
+        const txReceipt = await this._exchange.marketBuyOrdersNoThrow.awaitTransactionSuccessAsync(
            params.orders,
            params.makerAssetFillAmount,
            params.signatures,
            { from, gas: opts.gas },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async batchCancelOrdersAsync(
        orders: SignedOrder[],
        from: string,
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = formatters.createBatchCancel(orders);
-        const txHash = await this._exchange.batchCancelOrders.sendTransactionAsync(params.orders, { from });
+        const txReceipt = await this._exchange.batchCancelOrders.awaitTransactionSuccessAsync(params.orders, { from });
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async cancelOrdersUpToAsync(salt: BigNumber, from: string): Promise<TransactionReceiptWithDecodedLogs> {
-        const txHash = await this._exchange.cancelOrdersUpTo.sendTransactionAsync(salt, { from });
+        const txReceipt = await this._exchange.cancelOrdersUpTo.awaitTransactionSuccessAsync(salt, { from });
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async registerAssetProxyAsync(
        assetProxyAddress: string,
        from: string,
    ): Promise<TransactionReceiptWithDecodedLogs> {
-        const txHash = await this._exchange.registerAssetProxy.sendTransactionAsync(assetProxyAddress, { from });
+        const txReceipt = await this._exchange.registerAssetProxy.awaitTransactionSuccessAsync(assetProxyAddress, {
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+            from,
-        return tx;
+        });
        return txReceipt;
    }
    public async executeTransactionAsync(
        signedTx: SignedZeroExTransaction,
        from: string,
    ): Promise<TransactionReceiptWithDecodedLogs> {
-        const txHash = await this._exchange.executeTransaction.sendTransactionAsync(
+        const txReceipt = await this._exchange.executeTransaction.awaitTransactionSuccessAsync(
            signedTx.salt,
            signedTx.signerAddress,
            signedTx.data,
            signedTx.signature,
            { from },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async getTakerAssetFilledAmountAsync(orderHashHex: string): Promise<BigNumber> {
        const filledAmount = await this._exchange.filled.callAsync(orderHashHex);
@@ -251,15 +222,14 @@ export class ExchangeWrapper {
        from: string,
    ): Promise<TransactionReceiptWithDecodedLogs> {
        const params = orderUtils.createMatchOrders(signedOrderLeft, signedOrderRight);
-        const txHash = await this._exchange.matchOrders.sendTransactionAsync(
+        const txReceipt = await this._exchange.matchOrders.awaitTransactionSuccessAsync(
            params.left,
            params.right,
            params.leftSignature,
            params.rightSignature,
            { from },
        );
-        const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
+        return txReceipt;
        return tx;
    }
    public async getFillOrderResultsAsync(
        signedOrder: SignedOrder,
--- a/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
+++ b/contracts/exchange/test/utils/fill_order_combinatorial_utils.ts
@@ -37,6 +37,7 @@ import 'make-promises-safe';
 import { artifacts, ExchangeContract, ExchangeFillEventArgs } from '../../src';
 import { AssetWrapper } from './asset_wrapper';
 import { dependencyArtifacts } from './dependency_artifacts';
 import { ExchangeWrapper } from './exchange_wrapper';
 import { OrderFactoryFromScenario } from './order_factory_from_scenario';
 import { SimpleAssetBalanceAndProxyAllowanceFetcher } from './simple_asset_balance_and_proxy_allowance_fetcher';
@@ -101,6 +102,7 @@ export async function fillOrderCombinatorialUtilsFactoryAsync(
        artifacts.Exchange,
        provider,
        txDefaults,
        dependencyArtifacts,
        zrxAssetData,
    );
    const exchangeWrapper = new ExchangeWrapper(exchangeContract, provider);
@@ -135,6 +137,7 @@ export async function fillOrderCombinatorialUtilsFactoryAsync(
        libsArtifacts.TestLibs,
        provider,
        txDefaults,
        dependencyArtifacts,
    );
    const fillOrderCombinatorialUtils = new FillOrderCombinatorialUtils(
--- a/contracts/exchange/test/wrapper.ts
+++ b/contracts/exchange/test/wrapper.ts
@@ -24,6 +24,8 @@ import * as _ from 'lodash';
 import { artifacts, ExchangeContract, ExchangeWrapper, ReentrantERC20TokenContract } from '../src';
 import { dependencyArtifacts } from './utils/dependency_artifacts';
 chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
@@ -87,6 +89,7 @@ describe('Exchange wrappers', () => {
            artifacts.Exchange,
            provider,
            txDefaults,
            dependencyArtifacts,
            assetDataUtils.encodeERC20AssetData(zrxToken.address),
        );
        exchangeWrapper = new ExchangeWrapper(exchange, provider);
@@ -110,6 +113,7 @@ describe('Exchange wrappers', () => {
            artifacts.ReentrantERC20Token,
            provider,
            txDefaults,
            dependencyArtifacts,
            exchange.address,
        );
--- a/contracts/extensions/CHANGELOG.json
+++ b/contracts/extensions/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "4.0.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "4.0.7",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "4.0.6",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "4.0.5",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "4.0.4",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564607468
    },
    {
        "timestamp": 1563957393,
        "version": "4.0.3",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "4.0.2",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "4.0.1",
--- a/contracts/extensions/CHANGELOG.md
+++ b/contracts/extensions/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v4.0.8 - _September 17, 2019_
    * Dependencies updated
 ## v4.0.7 - _September 3, 2019_
    * Dependencies updated
 ## v4.0.6 - _August 22, 2019_
    * Dependencies updated
 ## v4.0.5 - _August 8, 2019_
    * Dependencies updated
 ## v4.0.4 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v4.0.3 - _July 24, 2019_
    * Dependencies updated
 ## v4.0.2 - _July 15, 2019_
    * Dependencies updated
 ## v4.0.1 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/extensions/README.md
+++ b/contracts/extensions/README.md
@@ -1,6 +1,6 @@
 ## Extensions
-This package implements various extensions to the 0x protocol. Extension contracts can add various rules around how orders are settled while still getting the interoperability and security benefits of using the underlying 0x protocol contracts. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package implements various extensions to the 0x protocol. Extension contracts can add various rules around how orders are settled while still getting the interoperability and security benefits of using the underlying 0x protocol contracts. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
@@ -12,7 +12,7 @@ npm install @0x/contracts-extensions --save
 ## Bug bounty
-A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0xproject.com/wiki#Bug-Bounty).
+A bug bounty for the 2.0.0 contracts is ongoing! Instructions can be found [here](https://0x.org/docs/guides/bug-bounty-program).
 ## Contributing
--- a/contracts/extensions/contracts/src/OrderMatcher/interfaces/IOrderMatcher.sol
+++ b/contracts/extensions/contracts/src/OrderMatcher/interfaces/IOrderMatcher.sol
@@ -18,7 +18,7 @@
 pragma solidity ^0.5.5;
-import "@0x/contract-utils/contracts/src/interfaces/IOwnable.sol";
+import "@0x/contracts-utils/contracts/src/interfaces/IOwnable.sol";
 import "./IMatchOrders.sol";
 import "./IAssets.sol";
--- a/contracts/extensions/package.json
+++ b/contracts/extensions/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-extensions",
-    "version": "4.0.1",
+    "version": "4.0.8",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,21 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/extensions/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contract-wrappers": "^9.1.6",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/sol-compiler": "^3.1.9",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -69,19 +69,19 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-asset-proxy": "^2.2.1",
+        "@0x/contracts-asset-proxy": "^2.2.8",
-        "@0x/contracts-erc20": "^2.2.7",
+        "@0x/contracts-erc20": "^2.2.14",
-        "@0x/contracts-erc721": "^2.1.8",
+        "@0x/contracts-erc721": "^2.1.15",
-        "@0x/contracts-exchange": "^2.1.7",
+        "@0x/contracts-exchange": "^2.1.14",
-        "@0x/contracts-exchange-libs": "^3.0.1",
+        "@0x/contracts-exchange-libs": "^3.0.8",
-        "@0x/contracts-utils": "^3.1.8",
+        "@0x/contracts-utils": "^3.2.4",
-        "@0x/order-utils": "^8.2.1",
+        "@0x/order-utils": "^8.4.0",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "lodash": "^4.17.11"
    },
    "publishConfig": {
--- a/contracts/extensions/test/balance_threshold_filter.ts
+++ b/contracts/extensions/test/balance_threshold_filter.ts
@@ -130,6 +130,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
            artifacts.Exchange,
            provider,
            txDefaults,
            artifacts,
            zrxAssetData,
        );
        exchangeWrapper = new ExchangeWrapper(exchangeInstance, provider);
@@ -148,6 +149,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
            artifacts.BalanceThresholdFilter,
            provider,
            txDefaults,
            artifacts,
            exchangeInstance.address,
            erc721BalanceThresholdAsset.address,
            erc721alanceThreshold,
@@ -157,6 +159,7 @@ describe(ContractName.BalanceThresholdFilter, () => {
            artifacts.BalanceThresholdFilter,
            provider,
            txDefaults,
            artifacts,
            exchangeInstance.address,
            erc20BalanceThresholdAsset.address,
            erc20BalanceThreshold,
--- a/contracts/extensions/test/dutch_auction.ts
+++ b/contracts/extensions/test/dutch_auction.ts
@@ -1,4 +1,3 @@
 import { DutchAuctionWrapper } from '@0x/contract-wrappers';
 import { ERC20Wrapper, ERC721Wrapper } from '@0x/contracts-asset-proxy';
 import { DummyERC20TokenContract } from '@0x/contracts-erc20';
 import { DummyERC721TokenContract } from '@0x/contracts-erc721';
@@ -82,7 +81,7 @@ describe(ContractName.DutchAuction, () => {
        const erc721Balances = await erc721Wrapper.getBalancesAsync();
        erc721MakerAssetIds = erc721Balances[makerAddress][erc721Token.address];
-        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.WETH9, provider, txDefaults);
+        wethContract = await WETH9Contract.deployFrom0xArtifactAsync(artifacts.WETH9, provider, txDefaults, artifacts);
        erc20Wrapper.addDummyTokenContract(wethContract as any);
        const zrxAssetData = assetDataUtils.encodeERC20AssetData(zrxToken.address);
@@ -90,6 +89,7 @@ describe(ContractName.DutchAuction, () => {
            artifacts.Exchange,
            provider,
            txDefaults,
            artifacts,
            zrxAssetData,
        );
        const exchangeWrapper = new ExchangeWrapper(exchangeInstance, provider);
@@ -107,6 +107,7 @@ describe(ContractName.DutchAuction, () => {
            artifacts.DutchAuction,
            provider,
            txDefaults,
            artifacts,
            exchangeInstance.address,
        );
        dutchAuctionContract = new DutchAuctionContract(dutchAuctionInstance.address, provider);
@@ -149,7 +150,7 @@ describe(ContractName.DutchAuction, () => {
            feeRecipientAddress,
            // taker address or sender address should be set to the ducth auction contract
            takerAddress: dutchAuctionContract.address,
-            makerAssetData: DutchAuctionWrapper.encodeDutchAuctionAssetData(
+            makerAssetData: assetDataUtils.encodeDutchAuctionAssetData(
                assetDataUtils.encodeERC20AssetData(defaultMakerAssetAddress),
                auctionBeginTimeSeconds,
                auctionBeginAmount,
@@ -191,7 +192,7 @@ describe(ContractName.DutchAuction, () => {
    describe('matchOrders', () => {
        it('should be worth the begin price at the begining of the auction', async () => {
            auctionBeginTimeSeconds = new BigNumber(currentBlockTimestamp + 2);
-            const makerAssetData = DutchAuctionWrapper.encodeDutchAuctionAssetData(
+            const makerAssetData = assetDataUtils.encodeDutchAuctionAssetData(
                defaultERC20MakerAssetData,
                auctionBeginTimeSeconds,
                auctionBeginAmount,
@@ -205,7 +206,7 @@ describe(ContractName.DutchAuction, () => {
        it('should be be worth the end price at the end of the auction', async () => {
            auctionBeginTimeSeconds = new BigNumber(currentBlockTimestamp - tenMinutesInSeconds * 2);
            auctionEndTimeSeconds = new BigNumber(currentBlockTimestamp - tenMinutesInSeconds);
-            const makerAssetData = DutchAuctionWrapper.encodeDutchAuctionAssetData(
+            const makerAssetData = assetDataUtils.encodeDutchAuctionAssetData(
                defaultERC20MakerAssetData,
                auctionBeginTimeSeconds,
                auctionBeginAmount,
@@ -271,7 +272,7 @@ describe(ContractName.DutchAuction, () => {
        it('should revert when auction expires', async () => {
            auctionBeginTimeSeconds = new BigNumber(currentBlockTimestamp - tenMinutesInSeconds * 2);
            auctionEndTimeSeconds = new BigNumber(currentBlockTimestamp - tenMinutesInSeconds);
-            const makerAssetData = DutchAuctionWrapper.encodeDutchAuctionAssetData(
+            const makerAssetData = assetDataUtils.encodeDutchAuctionAssetData(
                defaultERC20MakerAssetData,
                auctionBeginTimeSeconds,
                auctionBeginAmount,
@@ -305,7 +306,7 @@ describe(ContractName.DutchAuction, () => {
        });
        it('begin time is less than end time', async () => {
            auctionBeginTimeSeconds = new BigNumber(auctionEndTimeSeconds).plus(tenMinutesInSeconds);
-            const makerAssetData = DutchAuctionWrapper.encodeDutchAuctionAssetData(
+            const makerAssetData = assetDataUtils.encodeDutchAuctionAssetData(
                defaultERC20MakerAssetData,
                auctionBeginTimeSeconds,
                auctionBeginAmount,
@@ -333,7 +334,7 @@ describe(ContractName.DutchAuction, () => {
            it('should match orders when ERC721', async () => {
                const makerAssetId = erc721MakerAssetIds[0];
                const erc721MakerAssetData = assetDataUtils.encodeERC721AssetData(erc721Token.address, makerAssetId);
-                const makerAssetData = DutchAuctionWrapper.encodeDutchAuctionAssetData(
+                const makerAssetData = assetDataUtils.encodeDutchAuctionAssetData(
                    erc721MakerAssetData,
                    auctionBeginTimeSeconds,
                    auctionBeginAmount,
--- a/contracts/extensions/test/order_matcher.ts
+++ b/contracts/extensions/test/order_matcher.ts
@@ -103,12 +103,14 @@ describe('OrderMatcher', () => {
            proxyArtifacts.ERC721Proxy,
            provider,
            txDefaults,
            artifacts,
        );
        // Depoy exchange
        exchange = await ExchangeContract.deployFrom0xArtifactAsync(
            artifacts.Exchange,
            provider,
            txDefaults,
            artifacts,
            assetDataUtils.encodeERC20AssetData(zrxToken.address),
        );
        exchangeWrapper = new ExchangeWrapper(exchange, provider);
@@ -126,6 +128,7 @@ describe('OrderMatcher', () => {
            artifacts.OrderMatcher,
            provider,
            txDefaults,
            artifacts,
            exchange.address,
        );
        // Set default addresses
@@ -198,6 +201,7 @@ describe('OrderMatcher', () => {
                artifacts.Exchange,
                provider,
                txDefaults,
                artifacts,
                constants.NULL_BYTES,
            );
            return expectContractCreationFailedAsync(
@@ -205,6 +209,7 @@ describe('OrderMatcher', () => {
                    artifacts.OrderMatcher,
                    provider,
                    txDefaults,
                    artifacts,
                    exchangeInstance.address,
                ) as any) as sendTransactionResult,
                RevertReason.UnregisteredAssetProxy,
@@ -727,6 +732,7 @@ describe('OrderMatcher', () => {
                erc721Artifacts.DummyERC721Token,
                provider,
                txDefaults,
                artifacts,
                constants.DUMMY_TOKEN_NAME,
                constants.DUMMY_TOKEN_SYMBOL,
            );
@@ -772,6 +778,7 @@ describe('OrderMatcher', () => {
                erc721Artifacts.DummyERC721Token,
                provider,
                txDefaults,
                artifacts,
                constants.DUMMY_TOKEN_NAME,
                constants.DUMMY_TOKEN_SYMBOL,
            );
@@ -789,6 +796,7 @@ describe('OrderMatcher', () => {
                erc721Artifacts.DummyERC721Token,
                provider,
                txDefaults,
                artifacts,
                constants.DUMMY_TOKEN_NAME,
                constants.DUMMY_TOKEN_SYMBOL,
            );
--- a/contracts/multisig/CHANGELOG.json
+++ b/contracts/multisig/CHANGELOG.json
@@ -1,4 +1,68 @@
 [
    {
        "timestamp": 1568744790,
        "version": "3.1.14",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1567521715,
        "version": "3.1.13",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1566446343,
        "version": "3.1.12",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1565296576,
        "version": "3.1.11",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "version": "3.1.10",
        "changes": [
            {
                "note": "Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies.",
                "pr": 1995
            }
        ],
        "timestamp": 1564607468
    },
    {
        "timestamp": 1563957393,
        "version": "3.1.9",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563193019,
        "version": "3.1.8",
        "changes": [
            {
                "note": "Dependencies updated"
            }
        ]
    },
    {
        "timestamp": 1563047529,
        "version": "3.1.7",
--- a/contracts/multisig/CHANGELOG.md
+++ b/contracts/multisig/CHANGELOG.md
@@ -5,6 +5,34 @@ Edit the package's CHANGELOG.json file only.
 CHANGELOG
 ## v3.1.14 - _September 17, 2019_
    * Dependencies updated
 ## v3.1.13 - _September 3, 2019_
    * Dependencies updated
 ## v3.1.12 - _August 22, 2019_
    * Dependencies updated
 ## v3.1.11 - _August 8, 2019_
    * Dependencies updated
 ## v3.1.10 - _July 31, 2019_
    * Updated calls to <contract wrapper>.deployFrom0xArtifactAsync to include artifact dependencies. (#1995)
 ## v3.1.9 - _July 24, 2019_
    * Dependencies updated
 ## v3.1.8 - _July 15, 2019_
    * Dependencies updated
 ## v3.1.7 - _July 13, 2019_
    * Dependencies updated
--- a/contracts/multisig/README.md
+++ b/contracts/multisig/README.md
@@ -1,6 +1,6 @@
 ## MultiSignature Contracts
-This package contains various types of multisignature wallet contracts, including the [`AssetProxyOwner`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxyowner) contract that is responsible for upgrading the 0x protocol smart contracts. Addresses of the deployed contracts can be found in the 0x [wiki](https://0xproject.com/wiki#Deployed-Addresses) or the [DEPLOYS](./DEPLOYS.json) file within this package.
+This package contains various types of multisignature wallet contracts, including the [`AssetProxyOwner`](https://github.com/0xProject/0x-protocol-specification/blob/master/v2/v2-specification.md#assetproxyowner) contract that is responsible for upgrading the 0x protocol smart contracts. Addresses of the deployed contracts can be found in this 0x [guide](https://0x.org/docs/guides/0x-cheat-sheet) or the [DEPLOYS](./DEPLOYS.json) file within this package.
 ## Installation
--- a/contracts/multisig/package.json
+++ b/contracts/multisig/package.json
@@ -1,6 +1,6 @@
 {
    "name": "@0x/contracts-multisig",
-    "version": "3.1.7",
+    "version": "3.1.14",
    "engines": {
        "node": ">=6.12"
    },
@@ -22,7 +22,7 @@
        "compile": "sol-compiler",
        "watch": "sol-compiler -w",
        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../packages/abi-gen-templates/contract.handlebars --partials '../../packages/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
+        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --output generated-wrappers --backend ethers",
        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "fix": "tslint --fix --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
        "coverage:report:text": "istanbul report text",
@@ -47,20 +47,21 @@
    },
    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/multisig/README.md",
    "devDependencies": {
-        "@0x/abi-gen": "^2.1.1",
+        "@0x/abi-gen": "^4.2.1",
-        "@0x/contracts-gen": "^1.0.10",
+        "@0x/contracts-gen": "^1.0.15",
-        "@0x/contracts-test-utils": "^3.1.9",
+        "@0x/contracts-test-utils": "^3.1.16",
-        "@0x/dev-utils": "^2.2.4",
+        "@0x/dev-utils": "^2.3.3",
-        "@0x/sol-compiler": "^3.1.9",
+        "@0x/sol-compiler": "^3.1.15",
        "@0x/tslint-config": "^3.0.1",
        "@types/lodash": "4.14.104",
        "@types/mocha": "^5.2.7",
        "@types/node": "*",
        "chai": "^4.0.1",
        "chai-as-promised": "^7.1.0",
        "chai-bignumber": "^3.0.0",
        "dirty-chai": "^2.0.1",
        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
+        "mocha": "^6.2.0",
        "npm-run-all": "^4.1.2",
        "shx": "^0.2.2",
        "solhint": "^1.4.1",
@@ -68,15 +69,15 @@
        "typescript": "3.0.1"
    },
    "dependencies": {
-        "@0x/base-contract": "^5.1.1",
+        "@0x/base-contract": "^5.4.0",
-        "@0x/contracts-asset-proxy": "^2.2.1",
+        "@0x/contracts-asset-proxy": "^2.2.8",
-        "@0x/contracts-erc20": "^2.2.7",
+        "@0x/contracts-erc20": "^2.2.14",
        "@0x/contracts-utils": "2.0.1",
-        "@0x/types": "^2.4.0",
+        "@0x/types": "^2.4.3",
-        "@0x/typescript-typings": "^4.2.3",
+        "@0x/typescript-typings": "^4.3.0",
-        "@0x/utils": "^4.4.0",
+        "@0x/utils": "^4.5.2",
-        "@0x/web3-wrapper": "^6.0.7",
+        "@0x/web3-wrapper": "^6.0.13",
-        "ethereum-types": "^2.1.3",
+        "ethereum-types": "^2.1.6",
        "lodash": "^4.17.11"
    },
    "publishConfig": {
--- a/contracts/multisig/test/asset_proxy_owner.ts
+++ b/contracts/multisig/test/asset_proxy_owner.ts
@@ -61,17 +61,20 @@ describe('AssetProxyOwner', () => {
            proxyArtifacts.MixinAuthorizable,
            provider,
            txDefaults,
            artifacts,
        );
        erc721Proxy = await MixinAuthorizableContract.deployFrom0xArtifactAsync(
            proxyArtifacts.MixinAuthorizable,
            provider,
            txDefaults,
            artifacts,
        );
        const defaultAssetProxyContractAddresses: string[] = [];
        testAssetProxyOwner = await TestAssetProxyOwnerContract.deployFrom0xArtifactAsync(
            artifacts.TestAssetProxyOwner,
            provider,
            txDefaults,
            artifacts,
            owners,
            defaultAssetProxyContractAddresses,
            REQUIRED_APPROVALS,
@@ -105,6 +108,7 @@ describe('AssetProxyOwner', () => {
                artifacts.AssetProxyOwner,
                provider,
                txDefaults,
                artifacts,
                owners,
                assetProxyContractAddresses,
                REQUIRED_APPROVALS,
@@ -122,6 +126,7 @@ describe('AssetProxyOwner', () => {
                    artifacts.AssetProxyOwner,
                    provider,
                    txDefaults,
                    artifacts,
                    owners,
                    assetProxyContractAddresses,
                    REQUIRED_APPROVALS,
--- a/contracts/multisig/test/multi_sig_with_time_lock.ts
+++ b/contracts/multisig/test/multi_sig_with_time_lock.ts
@@ -66,6 +66,7 @@ describe('MultiSigWalletWithTimeLock', () => {
                artifacts.MultiSigWalletWithTimeLock,
                provider,
                txDefaults,
                artifacts,
                owners,
                REQUIRED_APPROVALS,
                secondsTimeLocked,
@@ -81,6 +82,7 @@ describe('MultiSigWalletWithTimeLock', () => {
                artifacts.MultiSigWalletWithTimeLock,
                provider,
                txDefaults,
                artifacts,
                owners,
                REQUIRED_APPROVALS,
                secondsTimeLocked,
@@ -135,6 +137,7 @@ describe('MultiSigWalletWithTimeLock', () => {
                artifacts.MultiSigWalletWithTimeLock,
                provider,
                txDefaults,
                artifacts,
                owners,
                REQUIRED_APPROVALS,
                secondsTimeLocked,
@@ -198,6 +201,7 @@ describe('MultiSigWalletWithTimeLock', () => {
                artifacts.TestRejectEther,
                provider,
                txDefaults,
                artifacts,
            );
            const data = constants.NULL_BYTES;
            const value = new BigNumber(10);
@@ -234,6 +238,7 @@ describe('MultiSigWalletWithTimeLock', () => {
                    artifacts.MultiSigWalletWithTimeLock,
                    provider,
                    txDefaults,
                    artifacts,
                    owners,
                    REQUIRED_APPROVALS,
                    secondsTimeLocked,
@@ -308,6 +313,7 @@ describe('MultiSigWalletWithTimeLock', () => {
                    artifacts.MultiSigWalletWithTimeLock,
                    provider,
                    txDefaults,
                    artifacts,
                    owners,
                    REQUIRED_APPROVALS,
                    SECONDS_TIME_LOCKED,
--- a/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
+++ b/contracts/multisig/test/utils/asset_proxy_owner_wrapper.ts
@@ -4,14 +4,17 @@ import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import { TransactionReceiptWithDecodedLogs } from 'ethereum-types';
-import { AssetProxyOwnerContract } from '../../generated-wrappers/asset_proxy_owner';
+import { AssetProxyOwnerContract, TestAssetProxyOwnerContract } from '../../src';
 import { artifacts } from '../../src/artifacts';
 export class AssetProxyOwnerWrapper {
-    private readonly _assetProxyOwner: AssetProxyOwnerContract;
+    private readonly _assetProxyOwner: AssetProxyOwnerContract | TestAssetProxyOwnerContract;
    private readonly _web3Wrapper: Web3Wrapper;
    private readonly _logDecoder: LogDecoder;
-    constructor(assetproxyOwnerContract: AssetProxyOwnerContract, provider: Web3ProviderEngine) {
+    constructor(
        assetproxyOwnerContract: AssetProxyOwnerContract | TestAssetProxyOwnerContract,
        provider: Web3ProviderEngine,
    ) {
        this._assetProxyOwner = assetproxyOwnerContract;
        this._web3Wrapper = new Web3Wrapper(provider);
        this._logDecoder = new LogDecoder(this._web3Wrapper, { ...artifacts, ...proxyArtifacts });
@@ -57,7 +60,7 @@ export class AssetProxyOwnerWrapper {
    ): Promise<TransactionReceiptWithDecodedLogs> {
        // tslint:disable-next-line:no-unnecessary-type-assertion
        const txHash = await (this
-            ._assetProxyOwner as AssetProxyOwnerContract).executeRemoveAuthorizedAddressAtIndex.sendTransactionAsync(
+            ._assetProxyOwner as TestAssetProxyOwnerContract).executeRemoveAuthorizedAddressAtIndex.sendTransactionAsync(
            txId,
            {
                from,
--- a/Show More
+++ b/Show More