* v2-prototype: (38 commits)
Revert "Publish"
Publish
Remove ERC721 callback functions
Use != instead of > in loops, add sanity checks to market fill functions
Add more tests and fixes
Remove MConstants and MixinConstants for LibConstants
Remove redundant external call by reimplementing fillOrderNoThrow
Remove orders length check
Add assertValidFillResults
Update web3Wrapper CHANGELOG
Get actual gasPrice from transaction instead of setting default
Store orders length in varible before looping over orders
Use transferFrom instead of safeTransferFrom
Fix minimal tests
Fix rounding error issues, use different logic when makerAsset is ZRX
Rename marketSellEth => marketSellWeth
Update percentage constants
Update transferEthFeeAndRefund, add check to ERC721 transfer
Refactor forwarding contract architecture, remove batch functions
Updated CHANGELOGS
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