* update abi-gen with new method interfaces
* wip: get all packages to build
* wip: get all packages to build
* Fix two contract wrapper calls
* Export necessary types part of the contract wrapper public interfaces
* Revive and fix wrapper_unit_tests
* Remove duplicate type
* Fix lib_exchange_rich_error_decoder tests
* Fix remaining test failures in contracts-* packages
* Prettier fixes
* remove transactionHelper
* lint and update changelogs
* Fix prettier
* Revert changes to reference docs
* Add back changelog already published and add revert changelog entry
* Add missing CHANGELOG entries
* Add missing comma
* Update mesh-rpc-client dep
* Update Mesh RPC logic in @0x/orderbook to v6.0.1-beta
* Align package versions
1. Removes state variables:
- totalWeightedStakeThisEpoch
- totalFeesCollectedThisEpoch
- numActivePoolsThisEpoch
2. No longer indexes by epoch % 2
3. Renamed event StakingPoolActivated → StakingPoolEarnedRewards.
4. Renamed structs:
- ActivePool → PoolStats. This holds stats for a pool that earned rewards.
- UnfinalizedState → AggregatedStats. This aggregates stats from the former struct.
`@0x/contracts-staking`: Make sure we don't overwrite an existing CR.
`@0x/contracts-staking`: Remove the need to initialize cumulative rewards when creating a pool.
`@0x/contracts-staking`: Just return an empty CR in `_getCumulativeRewardAtEpoch()` if one can't be found.
- No longer an upper limit on how many makers can be in a pool.
- No longer a handshake for a maker to join a pool.
- No longer any special powers given to makers.
- Pool Id starts at 1 and increments by 1.
`@0x/contracts-staking`: Convert all rewards to WETH.
`@0x/contracts-staking`: Style changes.
`@0x/contracts-staking`: Address misc. review comments.
`@0x/contracts-staking`: Make `LibFractions` scaling a separate step.
