In web3 wrapper when a response contains an error field we throw this rather than return response.result which is often undefined.
In Signature Utils we handle the error thrown when a user rejects the signing dialogue to prevent double signing.
Exposed the ZeroExTransaction JSON schema.
In Website only use the MetamaskSubprovider if we can detect the provider is Metamask
MM has a number of inconsistencies with other providers when implementing the JSON RPC interface. This subprovider wraps those nuances so they do not leak into the rest of our code
This allows the developer to indicate the nuanced signer provider. Some have different implementations (trezor, ledger) and others have different implementations (metamask). Breaking the abstraction of eth_sign. EthSign assumes a spec compliant implementation and can be used as a default
* 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
