* WIP add combinatorial tests for internal Exchange functions
* Change combinitorial testing strategy based on feedback
* Check value of filled[orderHash] in updateFilledState tests
* Add combinatorial tests for addFillResults
* Add combinatorial tests for getPartialAmount
* Implement generic `testWithReferenceFuncAsync`
* Implement generic `testCombinatoriallyWithReferenceFuncAsync`
* Add combinatorial tests for isRoundingError
* Add combinatorial tests for calculateFillResults
* Add support for Geth in internal contract tests
* Fix contract artifacts
* Change DECIMAL_PLACES to 78 and add a note.
* Document new functions in utils
* Optimize tests by only reseting state when needed
* Rename/move some files
* Print parameter names on failure in testWithReferenceFuncAsync
* Add to changelog for utils package
* Appease various linters
* Rename some more things related to FillOrderCombinatorialUtils
* Remove .only from test/exchange/internal.ts
* Remove old test for isRoundingError and getPartialAmount
* Appease linters again
* Remove old todos
* Fix typos, add comments, rename some things
* Re-add some LibMath tests
* Update contract internal tests to use new SafeMath revert reasons
* Apply PR feedback from Amir
* Apply PR feedback from Remco
* Re-add networks to ZRXToken artifact
* Remove duplicate Whitelist in compiler.json
* v2-prototype: (48 commits)
Update CHANGELOG
Rename call data schema id to CallData. Check for TypedArray when hashing data in order-utils crypto
Fix broken links in sol-cov documentation
Fix 0x.js ts warnings
Update yarn.lock
Fix 0x.js ts warnings
Fix 0x.js tests on CI
Fix a bad merge
Update package versions
Merge
Update changelogs
Add a test for ERC721 Allowance
Use allowance instead of approval for all in fill-scenarios
Upgrade sha3 to 1.2.2 to work with node v10
Check if the token doesn't exist before minting in fill scenarios
Make downlevelIteration a global config
Fix tests descriptions
DRY up the code in order-watcher collision-resistant abi decoder
Await transactions in fillScenarios
Rename decodeAssetData to decodeAssetDataOrThrow
...
