`@0x/contracts-staking`: Move params storage variables into `MixinStorage`. `@0x/contracts-staking`: Add storage layout tests for new state vars. `@0x/contracts-staking`: Add more migration tests. `@0x/contracts-staking`: Add `_initMixinParams()` function that sets up `MixinParams` state.
Deployed Contract Packages
| Contract | Package | Version | Git Tag | 
|---|---|---|---|
| AssetProxyOwner | @0x/contracts-multisig | v1.0.2 | @0x/contracts-multisig@1.0.2 | 
| ERC20Proxy | @0x/contracts-asset-proxy | v1.0.1 | @0x/contracts-asset-proxy@1.0.1 | 
| ERC721Proxy | @0x/contracts-asset-proxy | v1.0.1 | @0x/contracts-asset-proxy@1.0.1 | 
| Exchange | @0x/contracts-exchange | v1.0.1 | @0x/contracts-exchange@1.0.1 | 
| DutchAuction | @0x/contracts-extensions | v1.0.2 | @0x/contracts-extensions@1.0.2 | 
| Forwarder | @0x/contracts-exchange-forwarder | v1.0.1 | @0x/contracts-exchange-forwarder@1.0.1 | 
| MultiAssetProxy | @0x/contracts-asset-proxy | v1.0.1 | @0x/contracts-asset-proxy@1.0.1 | 
| ZRXToken | @0x/contracts-erc20 | v1.0.1 | @0x/contracts-erc20@1.0.1 | 
Development
Building solidity files will update the contract artifact in {package-name}/generated-artifacts/{contract}.json, but does not automatically update the abi-gen-wrappers package, which are generated from the artifact JSON. To ensure consistency, clean and rebuild abi-gen-wrappers after any changes to the artifact JSON.