* 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: (45 commits)
Check length before accessing indices, add awaitTransactionSuccess where needed, and rename function
Add back before/after snapshots for each test
Rename Signer to Wallet, rename GAS_ESTIMATE to GAS_LIMIT
Make preSigned and allowedValidators mappings public
Change names of signature types
Fix formatting and tests
Make AssetProxyId last byte of assetData
Add signer to txHash, allow approveValidator to be used with executeTransaction
Update Whitelist
Fix Exchange interface
Increase block gas limit
Use last byte of signature as signature type
Remove TxOrigin signature type, modify whitelist to use Validator signature type
Update Whitelist contract with comments, also require maker to be whitelisted
Fix build
Add example whitelist contract and minimum tests
Add sample whitelist contract
Add TxOrigin signature type and rearrange order of types
Add approveValidator function
Add Validator signature type
...
# Conflicts:
# packages/contracts/src/contracts/current/protocol/Exchange/MixinSignatureValidator.sol
# packages/contracts/src/utils/types.ts
# packages/contracts/test/exchange/transactions.ts
# packages/order-utils/src/asset_proxy_utils.ts
* v2-prototype:
Temporarily disable installation tests
Pin connect in sra-report
Fix a typo
Pin types in sra-report
Fix linter issues
Unpin types version in @0xproject/connect
Pin types version in website
Do a fake version bump on types so that yarn doesn't try to install updated version for not yet migrated packages
Migrate migrations to v2
# Conflicts:
# packages/contracts/src/utils/order_utils.ts
