* [types] Add TransactionErrorSink to report failed txs
[node] Create ErrorSink handler for unique error msgs
Implemented with a LRU cache.
[node] Rename ErrorSink to TransactionErrorSink
* Rename RPCTransactionError to TransactionError
[node] Make tx error sink not return err on Add & Remove
[node] Make tx errorSink Contains check take string as tx hash param
[errorsink] Move tx error sink into errorsink pkg
[errorsink] Rename Errors and Count methods
[errorsink] Rename NewTransactionErrorSink to NewTransactionSink
[types] Move error sink to core/types
* Rename NewTransactionSink to NewTransactionErrorSink
* [types] Fix log msg for unfound errors
* [types] Rename TransactionError to TransactionErrorReport
* [core] Remove RPCTransactionError & refactor tx_pool to use TxErrorSink
* [staking] Remove RPCTransactionError
* [node] Refactor tx_pool init to use new TxErrorSink
* [main] Construct transaction error sink before initing the node
* [node] Refactor error sink reporting at RPC layer
* [rpc] Refactor returned type of ErrorSink RPCs to 1 type
* [core] Remove tx from TxErrorSink on Add to tx_pool
* [types] Make NewTransactionErrorSink not return err
* [node] Make node.New create error sink
* [cmd] Revert to origin main.go
* [core] Add TxErrorSink unit test & fix bad ErrExcessiveBLSKeys in tests
* [testnet config] Change testnet config to allow for 5*4 external keys
* [cmd] Revert main.go to original node instantiation
* [rpc] Add GetPoolStats rpc to fetch pending and queued tx counts
* [project] Dead test
* [node] If fields always same, then just use the constant
* [project] Remove overcomplicated ctxerror
* [project] Remove more dead tests, adjust error replacing ctxerror
* [project] More dead tests, fix travis complaint on Errorf
* [node.sh] Remove is-genesis
* [staking] Stumble out test case for validator information
* [shard] Provide JSON dump of shard state
* [EPoS] Checkpoint w/RJ
* [EPoS] Implement EPoS at slot level
* [shard] Remove two-value loop
* [epos] Remove test code generation - use commit for testing later
* [epos] Remove debug code, address lint
* [epos] Remove staking epoch comment
* [epos] Use max(320, len(stakers)) for median calculation
* [epos] Remove search for empty spot for staked validator, only use top 320 for median
* [epos] Address PR comments
* [epos] Raise pull count as function parameter
* [epos] Add initial testing for calculate
* [committee] Move core.ShardingSchedule to shard.Schedule
* [consensus] Remove redundant PublicKeys field of Consensus as Decider maintains that
* [committee] Use committee package to pick PublicKeys
* [committee] Use committee inplace of CalculateShardState
* [committee] Remove core/resharding.go, complete usage of committee as implementation replacement
* [committee] Address PR comments
Sebastian Johnsson
Daniel Van Der Maden
Leo Chen
Edgar Aroutiounian
Rongjian Lan
flicker-harmony
Andy Wu
Eugene Kim
Ben