`@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.
`@0x/contracts-staking`: Add assertions against `maximumMakersInPool` and `rewardDelegatedStakeWeight`.
`@0x/contracts-staking`: Rebase against 3.0 (again).
`@0x/contracts-staking`: Add `init()` to `Staking` contract.
`@0x/contracts-staking`: Add `_initMixinScheduler()` to `MixinScheduler`.
`@0x/contracts-staking`: Automaticallly call `Staking.init()` in `StakingProxy.attachStakingContract()`.
`@0x/contracts-staking`: Remove `setCobbDouglasAlpha()` in favor of `tune()`.
`@0x/contracts-staking`: Exclude pools with `stake < minimumPoolStake` in `payProtocolFee()`.
`@0x/contracts-staking`: Remove some unecessary asserts.
`@0x/contracts-staking`: Fix some broken test assertions.
`@0x/contracts-staking`: Generate better random values in tests.
`@0x/contracts-staking`: Rename `PPM_ONE` constant to `PPM_DENOMINATOR`.
`@0x/contracts-staking`: Minor solidity code improvements.
`@0x/contracts-staking`: Use more constants from `@0x/contracts-test-utils` in tests.
`@0x/contracts-staking`: Denominate pool operator shares in parts-per-million.
`@0x/contracts-staking`: Update tests for new stake computation and higher precision math.
`@0x/contracts-staking`: Add `setCobbDouglasAlpha()` function.
`@0x/contracts-staking`: Add `_invert()` and `_mulDiv()` to `LibFixedMath`.
`@0x/contracts-staking`: Update `MixinExchangeFees._cobbDouglas()` to work with `LibFixedMath`.
`@0x/contracts-staking`: Add unit and fuzz tests for `_cobbDouglas()` and remaining `LibFixedMath` functions.
`@0x/contracts-staking`: Update `LibFixedMath` to existing naming conventions.
`@0x/contracts-staking`: Add `cobbDouglasAlphaNumerator` and `cobbDouglasAlphaDenominator` to `Mixinstorage`.
`@0x/contracts-staking`: Add external `setCobbDouglasAlpha()` function to `MixinExchnageFees`
`@0x/contracts-staking`: Update `_cobbDouglas()` to use the new `LibFixedMath` voodoo.
`@0x/contracts-staking`: In reward calculations, use only delegated stake by pool owner as opposed to both delegated and active stake to compute stake totals.