bsc/CHANGELOG.md

Changelog

v1.3.4

BUGFIX

• fix: remove pipecommit in miner
• add a hard fork: Hertzfix

v1.3.3

IMPROVEMENT

• #2000 cmd/utils: exit process if txlookuplimit flag is set

BUGFIX

• #1986 fix(cmd): check pruneancient when creating db

v1.3.2

BUGFIX

• fix: remove sharedPool

v1.3.1

FEATURE

• #1881 feat: active pbss
• #1882 cmd/geth: add hbss to pbss convert tool
• #1916 feat: cherry-pick pbss patch commits from eth repo in v1.13.2
• #1939 dependency: go version to 1.20 and some dependencies in go.mod
• #1955 eth, trie/triedb/pathdb: pbss patches
• #1962 cherry pick pbss patches from go-ethereum

BUGFIX

• #1923 consensus/parlia: fix nextForkHash in Extra filed of block header
• #1950 fix: 2 APIs of get receipt related
• #1951 txpool: fix a potential crash issue in shutdown;
• #1963 fix: revert trie commited flag after delete statedb mpt cache

IMPROVEMENT

• #1948 performance: commitTire concurrently
• #1949 code: remove accountTrieCache and storageTrieCache
• #1954 trie: keep trie prefetch during validation phase

v1.3.0

RPC

• internal/ethapi: add debug_getRawReceipts RPC method (#24773)
• node, rpc: add ReadHeaderTimeout config option (#25338)
• rpc: check that "version" is "2.0" in request objects (#25570)
• rpc: support injecting HTTP headers through context (#26023)
• rpc: websocket should respect the "HTTP_PROXY" by default (#27264)
• rpc: change BlockNumber constant values to match ethclient (#27219)
• eth: make debug_StorageRangeAt take a block hash or number (#27328)
• eth,core: add api debug_getTrieFlushInterval (#27303)
• rpc: add limit for batch request items and response size (#26681)
• core/types: support yParity field in JSON transactions (#27744)
• eth/filters: send rpctransactions in pending-subscription (#26126)

Flag

• cmd/geth: rename --whitelist to --eth.requiredblocks (#24505)
• cmd: migrate to urfave/cli/v2 (#24751)
• cmd/utils: print warning when --metrics.port set without --metrics.ad…
• cmd/devp2p: add --extaddr flag (#26312)
• core,eth: adddebug_setTrieFlushInterval to change trie flush frequ
• miner, cmd, eth: require explicit etherbase address (#26413)
• cmd/geth: Add[--log.format] cli param (#27001)
• cmd/geth: rename --vmodule to --log.vmodule (#27071)
• params, trie: add verkle fork management + upgrade go-verkle (#27464)

GraphQL

• graphql: fee history fields (#24452)
• graphql: add rawReceipt field to transaction type (#24738)
• graphql: add raw fields to block and tx (#24816)
• graphql: return correct logs for tx (#25612)
• graphql: add query timeout (#26116)
• graphql, node, rpc: improve HTTP write timeout handling (#25457)
• graphql: implement withdrawals (EIP-4895) (#27072)

Client

• ethclient: add CallContractAtHash (#24355)
• ethclient: add PeerCount method (#24849)
• ethereum, ethclient: add FeeHistory support (#25403)
• eth/filters, ethclient/gethclient: add fullTx option to pending tx fi…
• ethclient: include withdrawals in ethclient block responses (#26778)

Tracer

• eth/tracers/js: drop duktape engine (#24934)
• eth/tracers: add support for block overrides in debug_traceCall (#24871)
• eth/tracers: add onlyTopCall option to callTracer (#25430)
• eth/tracers: remove revertReasonTracer, add revert reason to callTracer
• eth/tracers: add diffMode to prestateTracer (#25422)
• eth/tracers: add multiplexing tracer (#26086)
• core/vm: set tracer-observable value of a delegatecall to match parent value
• eth/tracers: add native flatCallTracer (aka parity style tracer) (#26…
• eth/tracers/native: set created address to nil in case of failure (#2…
• eth/tracers: report correct gasLimit in call tracers (#27029)
• eth/tracers: addtxHashfield on txTraceResult (#27183)
• eth/tracers: add ReturnData in the tracer's response (#27704)

Command

• cmd/geth: inspect snapshot dangling storage (#24643)
• core/state/snapshot: detect and clean up dangling storage snapshot in generation
• internal/ethapi: add db operations to api (#24739)
• cmd/geth: adddb check-state-contentto verify integrity of trie nodes (#24840)
• ethdb/remotedb, cmd: add support for remote (readonly) databases
• cmd/abigen: accept combined-json via stdin (#24960)
• cmd/geth: extend traverseRawState command (#24954)
• cmd/geth, core/state/snapshot: rework journal loading, implement account-check (#24765)
• cmd/geth: add a verkle subcommand (#25718)
• cmd/geth, cmd/utils: geth attach with custom headers (#25829)
• core/rawdb: refactor db inspector for extending multiple ancient storage
• cmd/clef: addlist-accountsandlist-walletsto CLI (#26080)
• cmd/clef: add importraw feature to clef (#26058)
• cmd/devp2p: add more nodekey commands (#26129)
• internal/web3ext: fix eth_call stateOverrides in console (#26265)
• cmd/evm: add blocktest subcommand to evm (#26526)

HardFork

• params: define cancun and prague as timestamp based forks (#26481)
• all: tie timestamp based forks to the passage of London (#27279)

Shanghai

• core/vm: implement EIP-3855: PUSH0 instruction (#24039)
• core: implement EIP-3651, warm coinbase (#25819)
• core/vm: implement EIP-3860: Limit and meter initcode (#23847)
• all: implement withdrawals (EIP-4895) (#26484)

CanCun (almost ready)

• all: implement EIP-1153 transient storage (#26003)
• core: 4844 opcode and precompile (#27356)
• core/vm: implement EIP-5656, mcopy instruction (#26181)
• core/state, core/vm: implement EIP 6780 (#27189)

New Feature

• eth: introduce eth67 protocol (#24093)
• eth: implement eth/68 (#25980)
• PBBS(ready to activate)

P2P

• eth/fetcher: throttle peers which deliver many invalid transactions (…

Build

• build/bot: add ppa-build.sh (#24919)
• more checs in ci

Improvement

• all: use 'embed' instead of go-bindata (#24744)
• all: move genesis initialization to blockchain (#25523)

Clear Up

• common/compiler, cmd/abigen: remove solc/vyper compiler integration
• all: remove concept of public/private API definitions (#25053)
• cmd/geth: drop geth js command (#25000)
• core/genesis: remove calaverasAllocData (#25516)
• node: drop support for static & trusted node list files (#25610)
• core: drop legacy receipt types (#26225)
• cmd/puppeth: remove puppeth
• cmd, eth, node: deprecate personal namespace (#26390)
• accounts, build, mobile: remove Andriod and iOS support
• params: remove EIP150Hash from chainconfig (#27087)
• all: remove notion of trusted checkpoints in the post-merge world (#2…
• all: remove ethash pow, only retain shims needed for consensus and te
• cmd, core, eth, graphql, trie: no persisted clean trie cache file (#2…
• les: remove obsolete code related to PoW header syncing (#27737)
• remove diffsync

Others

• accounts/usbwallet: support Ledger Nano S Plus and FTS (#25933)
• accounts/scwallet: fix keycard data signing error (#25331)
• core/state: replace fastcache code cache with gc-friendly structure (…
• internal/debug: add --log.file option (#26149)
• ci: disable coverage reporting in appveyor and travis
• all: change chain head markers from block to header (#26777)
• core, miner: revert block gas counter in case of invalid transaction
• accounts/usbwallet: mitigate ledger app chunking issue (#26773)
• signer/core: accept all solidity primitive types for EIP-712 signing
• cmd/geth: enable log rotation (#26843)
• internal/ethapi: make EstimateGas use[latest] block by default (#24363)
• miner: suspend miner if node is syncing (#27218)
• all: move main transaction pool into a subpool (#27463)
• core/txpool/blobpool: 4844 blob transaction pool (#26940)
• eth: send big transactions by announce/retrieve only (#27618)
• core/rawdb: support freezer batch read with no size limit (#27687)
• disable pipeCommit, break now

v1.2.12

FEATURE

• #1852 discov: add hardcoded bootnodes

BUGFIX

• #1844 crypto: Update BLST to v0.3.11
• #1854 fetcher: no import blocks before or equal to the finalized height
• #1855 eth/tracers: trace system tx should add intrinsicGas

IMPROVEMENT

• #1839 Update init-network command
• #1858 vote: check consensus key match vote key before voting

v1.2.11

FEATURE

• #1797 client: add FinalizedHeader/Block to use the fast finality
• #1805 vote: remove DisableBscProtocol and add flag to skip votes assmebling

BUGFIX

• #1829 fix: lagging nodes failed to sync

v1.2.10

FEATURE

• #1780 log: reduce logs when receiving too much votes from a peer
• #1788 metrics: add txpool config into metrics server
• #1789 rpc: add GetFinalizedHeader/Block to simplify using the fast finality feature
• #1791 finality: add more check to ensure result of assembleVoteAttestation
• #1795 tool: add a tool extradump to parse extra data after luban

BUGFIX

• #1773 discov: do not filter out bootnodes
• #1778 vote: backup validator sync votes from corresponding mining validator
• #1784 fix: exclude same votes when doing malicious voting check

v1.2.9

FEATURE

• #1775 upgrade: several hardfork block height on mainnet: Plato, Hertz(Berlin, London)

v1.2.8

FEATURE

• #1626 eth/filters, ethclient/gethclient: add fullTx option to pending tx filter
• #1726 feat: support password flag when handling bls keys

BUGFIX

• #1734 fix: avoid to block the chain when failed to send votes

v1.2.7

FEATURE

• #1645 lightclient: fix validator set change
• #1717 feat: support creating a bls keystore from a specified private key
• #1720 metrics: add counter for voting status of whole network

v1.2.6

FEATURE

• #1697 upgrade: block height of Hertz(London&Berlin) on testnet
• #1686 eip3529tests: refactor tests
• #1676 EIP-3529 (BEP-212) Unit tests for Parlia Config
• #1660 feat: add a tool for submitting evidence of maliciousvoting
• #1623 P2P: try to limit the connection number per IP address
• #1608 feature: Enable Berlin EIPs
• #1597 feature: add malicious vote monitor
• #1422 core: port several London EIPs on BSC

IMPROVEMENT

• #1662 consensus, core/rawdb, miner: downgrade logs
• #1654 config: use default fork config if not specified in config.toml
• #1642 readme: update the disk requirement to 2.5TB
• #1621 upgrade: avoid to modify RialtoGenesisHash when testing in rialtoNet

BUGFIX

• #1682 fix: set the signer of parlia to the most permissive one
• #1681 fix: not double GasLimit of block upon London upgrade
• #1679 fix: check integer overflow when decode crosschain payload
• #1671 fix: voting can only be enabled when mining
• #1663 fix: ungraceful shutdown caused by malicious Vote Monitor
• #1651 fix: remove naturally finality
• #1641 fix: support getFilterChanges after NewFinalizedHeaderFilter

v1.2.5

BUGFIX

• #1675 goleveldb: downgrade the version for performance

v1.2.4

FEATURE

• #1636 upgrade: block height of Luban on mainnet

v1.2.3

FEATURE

• #1574 upgrade: update PlatoUpgrade contracts code
• #1594 upgrade: block height of Plato on testnet

IMPROVEMENT

• #866 code: x = append(y) is equivalent to x = y
• #1488 eth/tracers, core/vm: remove time from trace output and tracing interface
• #1547 fix: recently signed check when slashing unavailable validator
• #1573 feat: remove supports for legacy proof type
• #1576 fix: support golang 1.20 by upgrading prysm to v4
• #1578 fix: output an error log when bsc extension fail to handshake
• #1583 metrics: add a counter for validator to check work status of voting

BUGFIX

• #1566 fix: config for VoteJournalDir and BLSWalletDir
• #1572 fix: remove dynamic metric labels about fast finality
• #1575 fix: make BLST PORTABLE for release binary
• #1590 fix: fix snap flaky tests

v1.2.2

It was skipped by a mistake, replaced by v1.2.3

v1.2.1

IMPROVEMENT

• #1527 log: revert a log back to trace level

v1.2.0

FEATURE

• #936 BEP-126: Introduce Fast Finality Mechanism
• #1325 genesis: add BEP174 changes to relayer contract
• #1357 Integration API for EIP-4337 bundler with an L2 validator/sequencer
• #1463 BEP-221: implement cometBFT light block validation
• #1493 bep: update the bytecode of luban fork after the contract release

IMPROVEMENT

• #1486 feature: remove diff protocol registration
• #1434 fix: improvements after testing fast finality

BUGFIX

• #1430 docker: upgrade alpine version & remove apks version
• #1458 cmd/faucet: clear reqs list when reorg to lower nonce
• #1484 fix: a deadlock caused by bsc protocol handeshake timeout

v1.1.23

BUGFIX

• #1464 fix: panic on using WaitGroup after it is freed

v1.1.22

FEATURE

• #1361 cmd/faucet: merge ipfaucet2 branch to develop

IMPROVEMENT

• #1412 fix: init-network with config.toml without setting TimeFormat
• #1401 log: support custom time format configuration
• #1382 consnesus/parlia: abort sealing when block in the same height has updated
• #1383 miner: no need to broadcast sidechain header mined by this validator

BUGFIX

• #1379 UT: fix some flaky tests
• #1403 Makefile: fix devtools install error
• #1381 fix: snapshot generation issue after chain reinit from a freezer

v1.1.21

FEATURE

• #1389 upgrade: update the fork height of planck upgrade on mainnet

BUGFIX

• #1354 fix: add some boundary check for security
• #1373 tracer: enable withLog for TraceCall
• #1377 miner: add fallthrough for switch cases

v1.1.20

FEATURE

• #1322 cmd/utils/flags.go: --diffsync flag is deprecate
• #1261 tracer: port call tracer withLog to bsc

IMPROVEMENT

• #1337 clean: Remove support for Ethereum testnet
• #1347 upgrade: update the fork height of planck upgrade on testnet
• #1343 upgrade: update system contracts' code of planck upgrade
• #1328 upgrade: update system contracts' code of testnet
• #1162 consensus: fix slash bug when validator set changing
• #1344 consensus: fix delete the 1st validator from snapshot.recents list
• #1149 feats: add ics23 proof support for cross chain packages
• #1333 sec: add proof ops check and key checker

BUGFIX

• #1348 core/txpool: implement additional DoS defenses

v1.1.19

FEATURE

• #1199 mointor: implement double sign monitor

IMPROVEMENT

• #1226 eth, trie: sync with upstream v1.10.26 to solve snap sync issues
• #1212 metrics: add miner info into metrics server
• #1240 Add NewBatchWithSize API for db and use this API for BloomIndexer.Commit()
• #1254 ci: update unmaintained tools to use maintained tools
• #1256 ci: disable CGO_ENABLED when building binary
• #1274 dep: bump the version of several important library
• #1294 parlia : add a check for the length of extraData.
• #1298 dep: update tendermint to v0.31.14

Document

• #1233 doc: update readme
• #1245 comments: add comments to clarify flags and byte codes
• #1266 docs: update the readme to latest
• #1267 docs: minor fix about the readme
• #1287 docs: minor fix on geth links

BUGFIX

• #1233 doc: update readme
• #1253 fix comments: prune ancient compatibility, add prune ancient comments
• #1301 fix: p2p sync with lagging peer
• #1302 fix: eth fetcher re-queue issue

v1.1.18

IMPROVEMENT

• #1209 metrics: add build info into metrics server
• #1204 worker: NewTxsEvent and triePrefetch reuse in mining task
• #1195 hardfork: update Gibbs fork height and system contract code
• #1192 all: sync with upstream v1.10.22
• #1186 worker: improvement of the current block generation logic to get more rewards
• #1184 worker: remove pre-seal empty block
• #1182 Parlia: Some updates of the miner worker
• #1181 all: sync with upstream v1.10.21
• #1177 core/forkid: refactor nextForkHash function
• #1174 worker: some code enhancement on work.go
• #1166 miner: disable enforceTip when get txs from txpool

BUGFIX

• #1201 worker: add double sign check for safety
• #1185 worker: fix a bug of the delay timer

v1.1.17

IMPROVEMENT

• #1114 typo: .github fix job name
• #1126 ci: specify bind-tools version
• #1140 p2p: upstream go-ethereum: use errors.Is for error comparison
• #1141 all: prefer new(big.Int) over big.NewInt(0)
• #1159 core: remove redundant func

BUGFIX

• #1138 fix: upstream patches from go-ethereum 1.10.19
• #1139 fix: upstream go-ethereum: fix duplicate fields names in the generted go struct
• #1145 consensus: the newChainHead mights not be imported to Parlia.Snapshot
• #1146 fix: upstream patches from go-ethereum 1.10.20

v1.1.16

• #1121 vm: add two proof verifier to fix the vulnerability in range proof

v1.1.15

• #1109 nanofork: block exploitation accounts and suspend cross chain bridge related precompile contracts

v1.1.14

IMPROVEMENT

• #1057 ci: allow merge pull request
• #1063 ci: fix the pattern of commit lint

BUGFIX

• #1062 test: fix TestOfflineBlockPrune failed randomly
• #1076 bug: pick some patches from go-ethereum on v1.10.18
• #1079 core: fix potential goroutine leak

v1.1.13

FEATURE

• #1051 Implement BEP153: Native Staking
• #1066 Upgrade cross chain logic of native staking

IMPROVEMENT

• #952 Improve trie prefetch
• #975 broadcast block before commit block and add metrics
• #992 Pipecommit enable trie prefetcher
• #996 Trie prefetch on state pretch

BUGFIX

• #1053 state: fix offline tool start failed when start with pruneancient
• #1060 consensus: fix the GasLimitBoundDivisor
• #1061 fix: upstream patches from go-ethereum
• #1067 fix:fix potential goroutine leak
• #1068 core trie rlp: patches from go-ethereum
• #1070 txpool: reheap the priced list if london fork not enabled

v1.1.12

FEATURE

• #862 Pruning AncientDB inline at runtime
• #926 Separate Processing and State Verification on BSC

IMPROVEMENT

• #816 merge go-ethereum v1.10.15
• #950 code optimizations for state prefetcher
• #972 redesign triePrefetcher to make it thread safe
• #998 update dockerfile with a few enhancement
• #1015 disable noisy logs since system transaction will cause gas capping

BUGFIX

• #932 fix account root was not set correctly when committing mpt during pipeline commit
• #953 correct logic for eip check of NewEVMInterpreter
• #958 define DiscReason as uint8
• #959 update some packages' version
• #983 fix nil pointer issue when stopping mining new block
• #1002 Fix pipecommit active statedb
• #1005 freezer batch compatible offline prunblock command
• #1007 missing contract upgrades and incorrect behavior when miners enable pipecommit
• #1009 resolve the concurrent cache read and write issue for fast node
• #1011 Incorrect merkle root issue when enabling pipecommit with miner
• #1013 tools broken because of writting metadata when open a readyonly db
• #1014 fast node can not recover from force kill or panic
• #1019 memory leak issue with diff protocol
• #1020 remove diffhash patch introduced from separate node
• #1024 verify node is not treated as verify node

v1.1.11

UPGRADE

• #927 add readme for validators about how to enter/exit maintenance
• #942 update the blockNumber of Euler Fork upgrade on BSC Mainnet

v1.1.10

FEATURE

• #885 add Euler Hardfork, including BEP-127 and BEP-131

BUGFIX

• #856 fix logic issue: handlers.removePeer() is called twice
• #860 fix:defer bloomprocessor close
• #877 fix validator pipecommit issue
• #870 fix:Shift panic for zero length of heads

v1.1.9

IMPROVEMENT

• #792 add shared storage for prefetching state data
• #795 implement state verification pipeline in pipecommit
• #803 prefetch state data during the mining process
• #812 skip verification on account storage root to tolerate with fastnode when doing diffsync
• #818 add shared storage to the prefetcher of miner
• #820 disable diffsync when pipecommit is enabled
• #830 change the number of prefetch threads

BUGFIX

• #797 fix race condition on preimage in pipecommit
• #808 fix code of difflayer not assign when new smart contract created
• #817 fix bugs of prune block tool
• #834 fix deadlock when failed to verify state root in pipecommit
• #835 fix deadlock on miner module when failed to commit trie
• #842 fix invalid nil check of statedb in diffsync

v1.1.8

FEATURES

• #668 implement State Verification && Snapshot Commit pipeline
• #581 implement geth native trace
• #543 implement offline block prune tools

IMPROVEMENT

• #704 prefetch state by applying the transactions within one block
• #713 add ARM binaries for release pipeline

BUGFIX

• #667 trie: reject deletions when verifying range proofs #667
• #643 add timeout for stopping p2p server to fix can not gracefully shutdown issue
• #740 update discord link which won't expire

v1.1.7

BUGFIX

• #628 fix state inconsistent when doing diffsync

v1.1.6

BUGFIX

• #582 the DoS vulnerabilities fixed in go-ethereum v1.10.9

IMPROVEMENT

• #578 reduce memory allocation and upgrade snappy version

FEATURES

• #570 reannounce local pending transactions

v1.1.5

BUGFIX

• #509 fix graceful shutdown bug

IMPROVEMENT

• #536 get diff accounts by replaying block when diff layer not found
• #527 improve diffsync protocol in many aspects
• #493 implement fast getDiffAccountsWithScope API

v1.1.4

Improvement

• #472 add metrics for contract code bitmap cache
• #473 fix ci test flow

BUGFIX

• #491 fix prefetcher related bugs

FEATURES

• #480 implement bep 95

v1.1.3

Improvement

• #456 git-flow support lint, unit test, and integration test
• #449 cache bitmap and change the cache type of GetCode
• #454 fix cache key do not have hash func
• #446 parallel bloom calculation
• #442 ignore empty tx in GetDiffAccountsWithScope
• #426 add block proccess backoff time when validator is not in turn and received in turn block
• #398 ci pipeline for release page

BUGFIX

• #446 fix concurrent write of subfetcher
• #444 fix blockhash not correct for the logs of system tx receipt
• #409 fix nil point in downloader
• #408 core/state/snapshot: fix typo

FEATURES

• #431 Export get diff accounts in block api
• #412 add extension in eth protocol handshake to disable tx broadcast
• #376 implement diff sync

v1.1.2

Security

• #379 A pre-announced hotfix release to patch a vulnerability in the EVM (CVE-2021-39137).

v1.1.1

IMPROVEMENT

• #355 miner should propose block on a proper fork

BUGFIX

• #350 flag: fix TriesInmemory specified but not work
• #358 miner: fix null pending block
• #360 pruner: fix state bloom sync permission in Windows
• #366 fix double close channel of subfetcher

v1.1.1-beta

• #333 improve block fetcher efficiency
• #326 eth/tracers: improve tracing performance
• #257 performance improvement in many aspects

v1.1.0

• #282 update discord link
• #280 update discord link
• #227 use more aggressive write cache policy

v1.1.0-beta

• #152 upgrade to go-ethereum 1.10.3

v1.0.7-hf.2

BUGFIX

• #194 bump btcd to v0.20.1-beta

v1.0.7-hf.1

BUGFIX

• #190 fix disk increase dramaticly
• #191 fix the reorg routine of tx pool stuck issue

v1.0.7

• #120 add health check endpoint
• #116 validator only write database state when enough distance
• #115 add batch query methods
• #112 apply max commit tx time for miner worker to avoid empty block
• #101 apply block number limit for the eth_getLogs api
• #99 enable directbroadcast flag to decrease the block propagation time
• #90 add tini in docker image
• #84 add jq in docker image

v1.0.6

• #68 apply mirror sync upgrade on mainnet

v1.0.5

SECURITY

• #63 security patches from go-ethereum
• #54 les: fix GetProofsV2 that could potentially cause a panic.

FEATURES

• #56 apply mirror sync upgrade
• #53 support fork id in header; elegant upgrade

IMPROVEMENT

• #61Add x-forward-for log message when handle message failed
• #60 add rpc method request gauge

BUGFIX

• #59 fix potential deadlock of pub/sub module

v1.0.4

IMPROVEMENT

• #35 use fixed gas price when network is idle
• #38 disable noisy log from consensus engine
• #47 upgrade to golang1.15.5
• #49 Create pull request template for all developer to follow

v1.0.3

IMPROVEMENT

• #36 add max gas allwance calculation

v1.0.2

IMPROVEMENT

• #29 eth/tracers: revert reason in call_tracer + error for failed internal…

v1.0.1-beta

IMPROVEMENT

• #22 resolve best practice advice

FEATURES

• #23 enforce backoff time for out-turn validator

BUGFIX

• #25 minor fix for ramanujan upgrade

UPGRADE

• #26 update chapel network config for ramanujan fork

v1.0.0-beta.0

FEATURES

• #5 enable bep2e tokens for faucet
• #14 add cross chain contract to system contract
• #15 Allow liveness slash fail

IMPROVEMENT

• #11 remove redundant gaslimit check

BUGFIX

• #4 fix validator failed to sync a block produced by itself
• #6 modify params for Parlia consensus with 21 validators
• #10 add gas limit check in parlia implement
• #13 fix debug_traceTransaction crashed issue