* development: (31 commits)
Prettier ignore Metacoin artifacts
Publish
Updated CHANGELOGS
Improve deployer error message
Fix 0x.js tests
Fix lint issue
Simply export
Move NULL_BYTES to @0xproject/utils
Simplify the tests
Fix lint error
Add step to publishing that upload staging doc jsons, deploys staging website, opens every docs page and asks the dev to confirm that each one renders properly before publishing
Fix web3Wrapper build command
Add top-level `yarn lerna:stage_docs` to upload docJsons to the staging S3 bucket for all packages with a docs page
Refactor publish script to have it's main execution body be lean and discrete steps
Removed unused command
Remove 0x.js test artifacts
Fix tslint
Move migrations into separate monorepo subpackage and hook it up to 0x.js and contracts
Remove unused var
Refactor RedundantRpcSubprovider into RedundantSubprovider
...
# Conflicts:
# packages/react-docs/CHANGELOG.json
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