* [rpc][validator] Extend hmy blockchain validator information
* [availability] Optimize bump count
* [staking][validator][rpc] Remove validator stats rpc, fold into validator information, make existing pattern default behavior
* [slash] Reimplement SetDifference
* [reward][engine][network] Remove bad API from fall, begin setup for Per validator awards
* [header] Custom Marshal header for downstream, remove dev code
* [effective][committee] Factor out EPoS round of computation thereby unification in codebase of EPoS
* [unit-test] Fix semantically wrong validator unit tests, punt on maxBLS key wrt tx-pool test
* [reward] Use excellent singleflight package for caching lookup of subcommittees
* [apr][reward] Begin APR package itself, iterate on iterface signatures
* [reward] Handle possible error from singleflight
* [rpc][validator][reward] Adjust RPC committees, singleflight on votingPower, foldStats into Validator Information
* [apr] Stub out computation of APR
* [effective][committee] Upgrade SlotPurchase with named fields, provide marshal
* [effective] Update Tests
* [blockchain] TODO Remove the validators no longer in committee
* [validator][effective] More expressive string representation of eligibilty, ValidatorRPC explicit say if in committee now
* [rpc] Median-stake more semantic meaningful
* [validator] Iterate on semantic meaning of JSON representation
* [offchain] Make validator stats return explicit error
* [availability] Small typo
* [rpc] Quick visual hack until fix delete out kicked out validators
* [offchain] Delete validator from offchain that lost their slot
* [apr] Forgot to update interface signature
* [apr] Mul instead of Div
* [protocol][validator] Fold block reward accum per vaidator into validator-wrapper, off-chain => on-chain
* [votepower] Refactor votepower Roster, simplify aggregation of network wide rosters
* [votepower][shard] Adjust roster, optimize usage of BLSPublicKey as key, use MarshalText trick
* [shard] Granular errors
* [votepower][validator] Unify votepower data structure with off-chain usage
* [votepower][consensus][validator] Further simplify and unify votepower with off-chain, validator stats
* [votepower] Use RJs naming convention group,overall
* [votepower] Remove Println, do keep enforcing order
* [effective][reward] Expand semantics of eligibility as it was overloaded and confusing, evict old voting power computations
* [apr] Adjust json field name
* [votepower] Only aggregate on external validator
* [votepower] Mistake on aggregation, custom presentation network-wide
* [rpc][validator][availability] Remove parameter, take into account empty snapshot
* [apr] Use snapshots from two, one epochs ago. Still have question on header
* [apr] Use GetHeaderByNumber for the header needed for time stamp
* [chain] Evict > 3 epoch old voting power
* [blockchain] Leave Delete Validator snapshot as TODO
* [validator][rpc][effective] Undo changes to Protocol field, use virtual construct at RPC layer for meaning
* [project] Address PR comments
* [committee][rpc] Move +1 to computation of epos round rather than hack mutation
* [reward] Remove entire unnecessary loop, hook on AddReward. Remove unnecessary new big int
* [votepower][rpc][validator] Stick with numeric.Dec for token involved with computation, expose accumulate block-reward in RPC
* [effective][committee] Track the candidates for the EPoS auction, RPC median-stake benefits
* [node] Add hack way to get real error reason of why cannot load shardchain
* [consensus] Expand log on current issue on nil block
* [apr] Do the actual call to compute for validator's APR
* [committee] Wrap SlotOrder with validator address, manifests in median-stake RPC
* [apr] Incorrect error handle order
* [quorum] Remove incorrect compare on bls Key, (typo), remove redundant error check
* [shard] Add log if stakedSlots is 0
* [apr] More sanity check on div by zero, more lenient on error when dont have historical data yet
* [committee] Remove + 1 on seat count
* [apr] Use int64() directly
* [apr] Log when odd empty nil header
* [apr] Do not crash on empty header, figure out later
Rongjian Lan
Edgar Aroutiounian