* [node] Add option to broadcast invalid tx (on by default)
* update main args to take in broadcast invalid tx
* update node.sh for new broadcast invalid tx option
* [rpc] Do not submit transaction if tx has been finalized
* Support legacy behavior and not return errors on tx submission
* [main] make broadcasting invalid tx default false
* [node] Fix formatting
* [network] Added caching to node server
* [network] renamed two singleflight.Group
* [network] added two error handling
* [network] added forget logic for single flight
* [network] changed single flight to lru cache solution
* [network] adjusted the cache size
* [network] changed cache size to 10000
* Optimize crosslink verification logic and add more cache (#3032)
* make crosslink broadcast smarter and more efficient (#3036)
* adjust catch up speed to be a sane number
* Fix crosslink broadcast condition (#3041)
* [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
* processing staking and normal transactions together
* bug fix and removing unwanted method
* made sense to rename and move the TransactionsByPriceAndNonce to pool type
* accounting for prestaking blocks, need to keep the previous order for processing txs
* Add cache to state validator access; refactor snapshot read/write
* make validator update happen at commit
* fix lint
* make sure slashing applies on validator wrapper in state
* Revert live update of validtor wrapper in staking txn
* add init population of validator cache logic
* Fix validator cache commit logic
* Separate validatorWrapper func
* fix build
* Fix lint
* [rpc] Remove filter code - it is not used
* [node][project] Remove more dead code, bump max message handler to 200
* [rpc] Undo overzealous filter removal
* [node] Unused package level big.Int
* [p2p] Throttle receives to a max of 100
* [project] Remove msgq
* [node][p2p] Only allow 100 max message handling at time
* [node][p2p] Throttle max message handler with Weighted Semaphore - init w/ uniform weight
* [node] Use go routine for passing handled block
* [p2p] Leftover commented out
* [node] Add log for when cannot pay semaphore cost
* [node] Bump max message handlers
* [internal] Remove file_embed
* [project] Remove unused file, unused function
* [consensus] Unused values
* [config] Unused field & function
* [internal] Unused address & hash
* [project] More unused tests, values, types
* [project] Move conn logger just to bootnode
* [rpc] Remove dead functions
* [internal] More unused functions
* [project] Remove dead keystore dir package
* [p2p] Need lock to grab all Topics
* [node] Force side effect of topic join, give each topic own weighted semaphore
* [p2p] Remove unused Method
* [p2p] More dead function
* [node] Unused BCPeers field
* [node] Need to exit early if have ping
* [p2p] Remove unnecessary & confusing abstraction
* [p2p] Expose topics
* separate transaction counts rpi api into regular vs staking
* fix api_test.sh for getTransactionCount apiv1
* nit. return results directly for get(Staking)TransactionsCount apis
* [project] Use tracepointer
* [project] Remove dead dependencies
* [rpc] Add unix time at boot as value for node metadata rpc - need direct machine uptime
* [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
* [internal] Remove dead RPC/wallet
* [rpc] Reduce API surface area for dead RPC
* [node] Remove dead flags, unused setters
* [project] Unused logger, too many loggers
* [core] staticcheck fixes, remove unused db keys
* [project] More dead code through, now in param and genesis
* [internal] Useless test
* Clean up logs
* remove log
* Refactor block period logic; wait for 100% sig before timeout
* logic fixes
* optimize now init
* always wait for 2s for grace period
* [project] Remove hmyclient
* [drand] Remove dead drand
* [drand] Remove dead code in proto, more dead drand things
* [project] Remove dead demo tool
* [project] Remove dead Lottery solidity
* [project] Remove dead hmy client main
* [node] Remove unused variable in test code
* [project] Remove keygen
* [project] Remove not useful test
* staking txn. look up by hash fix on api backend rawdb storage
* node explorer staking txn 'history' RPC layer support
* fix unit test
* add error log when explorer node db instance cannot be fetched
* revert unwanted merge changes during rebase
* use already encoded tx message fields for get staking txn rpc
* update explorer node storage service for staking txns
* use hex string for staking transaction data field
* revert transaction pool apiv1 changes