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docs: update changelogs for 2.2.{8,9,10,11}, 2.3.{1,2,3,4,5}, and 2.4.0 (#10389) 

* docs: move changelog 2-3 to docs/

* docs: fix changelog 2-3 path

* docs: add changelogs for 2.2.{8,9,10,11}

* docs: add changelogs for 2.3.{1,2,3,4}

* Update CHANGELOG.md

* Update CHANGELOG-2.3.md

* Update CHANGELOG.md

* Update CHANGELOG.md
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## Parity-Ethereum [v2.3.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.3.0) (2019-01-16) ## Parity-Ethereum [v2.4.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.4.0) (2019-02-25)
Parity-Ethereum 2.3.0-beta is a consensus-relevant security release that reverts Constantinople on the Ethereum network. Upgrading is mandatory for Ethereum, and strongly recommended for other networks. Parity-Ethereum 2.4.0-beta is our trifortnightly minor version release coming with a lot of new features as well as bugfixes and performance improvements.
- **Consensus** - Ethereum Network: Pull Constantinople protocol upgrade on Ethereum (#10189) Notable changes:
- Read more: [Security Alert: Ethereum Constantinople Postponement](https://blog.ethereum.org/2019/01/15/security-alert-ethereum-constantinople-postponement/) - Account management is now deprecated ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
- **Networking** - All networks: Ping nodes from discovery (#10167) - Local accounts can now be specified via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
- **Wasm** - Kovan Network: Update pwasm-utils to 0.6.1 (#10134) - Chains can now be reset to a particular block via CLI ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
- Ethash now additionally implements ProgPoW ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762))
Other notable changes: - The `eip1283DisableTransition` flag was added to revert EIP-1283 ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
- Existing blocks in the database are now kept when restoring a Snapshot. (#8643)
- Block and transaction propagation is improved significantly. (#9954)
- The ERC-191 Signed Data Standard is now supported by `personal_sign191`. (#9701)
- Add support for ERC-191/712 `eth_signTypedData` as a standard for machine-verifiable and human-readable typed data signing with Ethereum keys. (#9631)
- Add support for ERC-1186 `eth_getProof` (#9001)
- Add experimental RPCs flag to enable ERC-191, ERC-712, and ERC-1186 APIs via `--jsonrpc-experimental` (#9928)
- Make `CALLCODE` to trace value to be the code address. (#9881)
Configuration changes:
- The EIP-98 transition is now disabled by default. If you previously had no `eip98transition` specified in your chain specification, you would enable this now manually on block `0x0`. (#9955)
- Also, unknown fields in chain specs are now rejected. (#9972)
- The Tendermint engine was removed from Parity Ethereum and is no longer available and maintained. (#9980)
- Ropsten testnet data and keys moved from `test/` to `ropsten/` subdir. To reuse your old keys and data either copy or symlink them to the new location. (#10123)
- Strict empty steps validation (#10041)
- If you have a chain with`empty_steps` already running, some blocks most likely contain non-strict entries (unordered or duplicated empty steps). In this release `strict_empty_steps_transition` is enabled by default at block `0x0` for any chain with `empty_steps`.
- If your network uses `empty_steps` you **must** (A) plan a hard fork and change `strict_empty_steps_transition` to the desired fork block and (B) update the clients of the whole network to 2.2.7-stable / 2.3.0-beta. If for some reason you don't want to do this please set`strict_empty_steps_transition` to `0xfffffffff` to disable it.
_Note:_ This release marks Parity 2.3 as _beta_. All versions of Parity 2.2 are now considered _stable_.
The full list of included changes: The full list of included changes:
- More Backports for Beta 2.4.0 ([#10431](https://github.com/paritytech/parity-ethereum/pull/10431))
- Backports for 2.3.0 beta ([#10164](https://github.com/paritytech/parity-ethereum/pull/10164)) - Revert some changes, could be buggy ([#10399](https://github.com/paritytech/parity-ethereum/pull/10399))
- Snap: fix path in script ([#10157](https://github.com/paritytech/parity-ethereum/pull/10157)) - Ci: clean up gitlab-ci.yml leftovers from previous merge ([#10429](https://github.com/paritytech/parity-ethereum/pull/10429))
- Make sure parent block is not in importing queue when importing ancient blocks ([#10138](https://github.com/paritytech/parity-ethereum/pull/10138)) - 10000 > 5000 ([#10422](https://github.com/paritytech/parity-ethereum/pull/10422))
- Ci: re-enable snap publishing ([#10142](https://github.com/paritytech/parity-ethereum/pull/10142)) - Fix underflow in pip, closes [#10419](https://github.com/paritytech/parity-ethereum/pull/10419) ([#10423](https://github.com/paritytech/parity-ethereum/pull/10423))
- Hf in POA Core (2019-01-18) - Constantinople ([#10155](https://github.com/paritytech/parity-ethereum/pull/10155)) - Fix panic when logging directory does not exist, closes [#10420](https://github.com/paritytech/parity-ethereum/pull/10420) ([#10424](https://github.com/paritytech/parity-ethereum/pull/10424))
- Update EWF's tobalaba chainspec ([#10152](https://github.com/paritytech/parity-ethereum/pull/10152)) - Update hardcoded headers for Foundation, Ropsten, Kovan and Classic ([#10417](https://github.com/paritytech/parity-ethereum/pull/10417))
- Replace ethcore-logger with env-logger. ([#10102](https://github.com/paritytech/parity-ethereum/pull/10102)) - Backports for Beta 2.4.0 ([#10416](https://github.com/paritytech/parity-ethereum/pull/10416))
- Finality: dont require chain head to be in the chain ([#10054](https://github.com/paritytech/parity-ethereum/pull/10054)) - No-git for publish jobs, empty artifacts dir ([#10393](https://github.com/paritytech/parity-ethereum/pull/10393))
- Remove caching for node connections ([#10143](https://github.com/paritytech/parity-ethereum/pull/10143)) - Snap: reenable i386, arm64, armhf architecture publishing ([#10386](https://github.com/paritytech/parity-ethereum/pull/10386))
- Blooms file iterator empty on out of range position. ([#10145](https://github.com/paritytech/parity-ethereum/pull/10145)) - Tx pool: always accept local transactions ([#10375](https://github.com/paritytech/parity-ethereum/pull/10375))
- Autogen docs for the "Configuring Parity Ethereum" wiki page. ([#10067](https://github.com/paritytech/parity-ethereum/pull/10067)) - Fix to_pod storage trie value decoding ([#10368](https://github.com/paritytech/parity-ethereum/pull/10368))
- Misc: bump license header to 2019 ([#10135](https://github.com/paritytech/parity-ethereum/pull/10135)) - Version: mark 2.4.0 beta
- Hide most of the logs from cpp example. ([#10139](https://github.com/paritytech/parity-ethereum/pull/10139)) - Update to latest mem-db, hash-db and trie-db. ([#10314](https://github.com/paritytech/parity-ethereum/pull/10314))
- Don't try to send oversized packets ([#10042](https://github.com/paritytech/parity-ethereum/pull/10042)) - Tx pool: always accept local transactions ([#10375](https://github.com/paritytech/parity-ethereum/pull/10375))
- Private tx enabled flag added into STATUS packet ([#9999](https://github.com/paritytech/parity-ethereum/pull/9999)) - Fix(trace_main! macro): don't re-export ([#10384](https://github.com/paritytech/parity-ethereum/pull/10384))
- Update pwasm-utils to 0.6.1 ([#10134](https://github.com/paritytech/parity-ethereum/pull/10134)) - Exchanged old(azure) bootnodes with new(ovh) ones ([#10309](https://github.com/paritytech/parity-ethereum/pull/10309))
- Extract blockchain from ethcore ([#10114](https://github.com/paritytech/parity-ethereum/pull/10114)) - Ethash: implement Progpow ([#9762](https://github.com/paritytech/parity-ethereum/pull/9762))
- Ethcore: update hardcoded headers ([#10123](https://github.com/paritytech/parity-ethereum/pull/10123)) - Snap: add the removable-media plug ([#10377](https://github.com/paritytech/parity-ethereum/pull/10377))
- Identity fix ([#10128](https://github.com/paritytech/parity-ethereum/pull/10128)) - Add message to IO errors ([#10324](https://github.com/paritytech/parity-ethereum/pull/10324))
- Use LenCachingMutex to optimize verification. ([#10117](https://github.com/paritytech/parity-ethereum/pull/10117)) - Chore(bump parity-daemonize): require rust >= 1.31 ([#10359](https://github.com/paritytech/parity-ethereum/pull/10359))
- Pyethereum keystore support ([#9710](https://github.com/paritytech/parity-ethereum/pull/9710)) - Secretstore: use in-memory transport in cluster tests ([#9850](https://github.com/paritytech/parity-ethereum/pull/9850))
- Bump rocksdb-sys to 0.5.5 ([#10124](https://github.com/paritytech/parity-ethereum/pull/10124)) - Add fields to `memzero`'s Cargo.toml ([#10362](https://github.com/paritytech/parity-ethereum/pull/10362))
- Parity-clib: `async C bindings to RPC requests` + `subscribe/unsubscribe to websocket events` ([#9920](https://github.com/paritytech/parity-ethereum/pull/9920)) - Snap: release untagged versions from branches to the candidate snap channel ([#10357](https://github.com/paritytech/parity-ethereum/pull/10357))
- Refactor (hardware wallet) : reduce the number of threads ([#9644](https://github.com/paritytech/parity-ethereum/pull/9644)) - Fix(compilation warns): `no-default-features` ([#10346](https://github.com/paritytech/parity-ethereum/pull/10346))
- Hf in POA Sokol (2019-01-04) ([#10077](https://github.com/paritytech/parity-ethereum/pull/10077)) - No volumes are needed, just run -v volume:/path/in/the/container ([#10345](https://github.com/paritytech/parity-ethereum/pull/10345))
- Fix broken links ([#10119](https://github.com/paritytech/parity-ethereum/pull/10119)) - Fixed misstype ([#10351](https://github.com/paritytech/parity-ethereum/pull/10351))
- Follow-up to [#10105](https://github.com/paritytech/parity-ethereum/issues/10105) ([#10107](https://github.com/paritytech/parity-ethereum/pull/10107)) - Snap: prefix version and populate candidate channel ([#10343](https://github.com/paritytech/parity-ethereum/pull/10343))
- Move EIP-712 crate back to parity-ethereum ([#10106](https://github.com/paritytech/parity-ethereum/pull/10106)) - Bundle protocol and packet_id together in chain sync ([#10315](https://github.com/paritytech/parity-ethereum/pull/10315))
- Move a bunch of stuff around ([#10101](https://github.com/paritytech/parity-ethereum/pull/10101)) - Role back docker build image and docker deploy image to ubuntu:xenial… ([#10338](https://github.com/paritytech/parity-ethereum/pull/10338))
- Revert "Add --frozen when running cargo ([#10081](https://github.com/paritytech/parity-ethereum/pull/10081))" ([#10105](https://github.com/paritytech/parity-ethereum/pull/10105)) - Change docker image based on debian instead of ubuntu due to the chan… ([#10336](https://github.com/paritytech/parity-ethereum/pull/10336))
- Fix left over small grumbles on whitespaces ([#10084](https://github.com/paritytech/parity-ethereum/pull/10084)) - Don't add discovery initiators to the node table ([#10305](https://github.com/paritytech/parity-ethereum/pull/10305))
- Add --frozen when running cargo ([#10081](https://github.com/paritytech/parity-ethereum/pull/10081)) - Fix(docker): fix not receives SIGINT ([#10059](https://github.com/paritytech/parity-ethereum/pull/10059))
- Fix pubsub new_blocks notifications to include all blocks ([#9987](https://github.com/paritytech/parity-ethereum/pull/9987)) - Snap: official image / test ([#10168](https://github.com/paritytech/parity-ethereum/pull/10168))
- Update some dependencies for compilation with pc-windows-gnu ([#10082](https://github.com/paritytech/parity-ethereum/pull/10082)) - Fix(add helper for timestamp overflows) ([#10330](https://github.com/paritytech/parity-ethereum/pull/10330))
- Fill transaction hash on ethGetLog of light client. ([#9938](https://github.com/paritytech/parity-ethereum/pull/9938)) - Additional error for invalid gas ([#10327](https://github.com/paritytech/parity-ethereum/pull/10327))
- Update changelog update for 2.2.5-beta and 2.1.10-stable ([#10064](https://github.com/paritytech/parity-ethereum/pull/10064)) - Revive parity_setMinGasPrice RPC call ([#10294](https://github.com/paritytech/parity-ethereum/pull/10294))
- Implement len caching for parking_lot RwLock ([#10032](https://github.com/paritytech/parity-ethereum/pull/10032)) - Add Statetest support for Constantinople Fix ([#10323](https://github.com/paritytech/parity-ethereum/pull/10323))
- Update parking_lot to 0.7 ([#10050](https://github.com/paritytech/parity-ethereum/pull/10050)) - Fix(parity-clib): grumbles that were not addressed in [#9920](https://github.com/paritytech/parity-ethereum/pull/9920) ([#10154](https://github.com/paritytech/parity-ethereum/pull/10154))
- Bump crossbeam. ([#10048](https://github.com/paritytech/parity-ethereum/pull/10048)) - Fix(light-rpc): Make `light_sync` generic ([#10238](https://github.com/paritytech/parity-ethereum/pull/10238))
- Ethcore: enable constantinople on ethereum ([#10031](https://github.com/paritytech/parity-ethereum/pull/10031)) - Fix publish job ([#10317](https://github.com/paritytech/parity-ethereum/pull/10317))
- Strict empty steps validation ([#10041](https://github.com/paritytech/parity-ethereum/pull/10041)) - Secure WS-RPC: grant access to all apis ([#10246](https://github.com/paritytech/parity-ethereum/pull/10246))
- Center the Subtitle, use some CAPS ([#10034](https://github.com/paritytech/parity-ethereum/pull/10034)) - Make specification of protocol in SyncRequester::send_request explicit ([#10295](https://github.com/paritytech/parity-ethereum/pull/10295))
- Change test miner max memory to malloc reports. ([#10024](https://github.com/paritytech/parity-ethereum/pull/10024)) - Fix: parity-clib/examples/cpp/CMakeLists.txt ([#10313](https://github.com/paritytech/parity-ethereum/pull/10313))
- Sort the storage for private state ([#10018](https://github.com/paritytech/parity-ethereum/pull/10018)) - Ci optimizations ([#10297](https://github.com/paritytech/parity-ethereum/pull/10297))
- Fix: test corpus_inaccessible panic ([#10019](https://github.com/paritytech/parity-ethereum/pull/10019)) - Increase number of requested block bodies in chain sync ([#10247](https://github.com/paritytech/parity-ethereum/pull/10247))
- Ci: move future releases to ethereum subdir on s3 ([#10017](https://github.com/paritytech/parity-ethereum/pull/10017)) - Deprecate account management ([#10213](https://github.com/paritytech/parity-ethereum/pull/10213))
- Light(on_demand): decrease default time window to 10 secs ([#10016](https://github.com/paritytech/parity-ethereum/pull/10016)) - Properly handle check_epoch_end_signal errors ([#10015](https://github.com/paritytech/parity-ethereum/pull/10015))
- Light client : failsafe crate (circuit breaker) ([#9790](https://github.com/paritytech/parity-ethereum/pull/9790)) - Fix(osx and windows builds): bump parity-daemonize ([#10291](https://github.com/paritytech/parity-ethereum/pull/10291))
- Lencachingmutex ([#9988](https://github.com/paritytech/parity-ethereum/pull/9988)) - Add missing step for Using `systemd` service file ([#10175](https://github.com/paritytech/parity-ethereum/pull/10175))
- Version and notification for private contract wrapper added ([#9761](https://github.com/paritytech/parity-ethereum/pull/9761)) - Call private contract methods from another private contract (read-onl… ([#10086](https://github.com/paritytech/parity-ethereum/pull/10086))
- Handle failing case for update account cache in require ([#9989](https://github.com/paritytech/parity-ethereum/pull/9989)) - Update ring to 0.14 ([#10262](https://github.com/paritytech/parity-ethereum/pull/10262))
- Add tokio runtime to ethcore io worker ([#9979](https://github.com/paritytech/parity-ethereum/pull/9979)) - Fix(secret-store): deprecation warning ([#10301](https://github.com/paritytech/parity-ethereum/pull/10301))
- Move daemonize before creating account provider ([#10003](https://github.com/paritytech/parity-ethereum/pull/10003)) - Update to jsonrpc-derive 10.0.2, fixes aliases bug ([#10300](https://github.com/paritytech/parity-ethereum/pull/10300))
- Docs: update changelogs ([#9990](https://github.com/paritytech/parity-ethereum/pull/9990)) - Convert to jsonrpc-derive, use jsonrpc-* from crates.io ([#10298](https://github.com/paritytech/parity-ethereum/pull/10298))
- Fix daemonize ([#10000](https://github.com/paritytech/parity-ethereum/pull/10000)) - Fix Windows build ([#10284](https://github.com/paritytech/parity-ethereum/pull/10284))
- Fix Bloom migration ([#9992](https://github.com/paritytech/parity-ethereum/pull/9992)) - Don't run the CPP example on CI ([#10285](https://github.com/paritytech/parity-ethereum/pull/10285))
- Remove tendermint engine support ([#9980](https://github.com/paritytech/parity-ethereum/pull/9980)) - Additional tests for uint deserialization. ([#10279](https://github.com/paritytech/parity-ethereum/pull/10279))
- Calculate gas for deployment transaction ([#9840](https://github.com/paritytech/parity-ethereum/pull/9840)) - Prevent silent errors in daemon mode ([#10007](https://github.com/paritytech/parity-ethereum/pull/10007))
- Fix unstable peers and slowness in sync ([#9967](https://github.com/paritytech/parity-ethereum/pull/9967)) - Fix join-set test to be deterministic. ([#10263](https://github.com/paritytech/parity-ethereum/pull/10263))
- Adds parity_verifySignature RPC method ([#9507](https://github.com/paritytech/parity-ethereum/pull/9507)) - Update CHANGELOG-2.2.md ([#10254](https://github.com/paritytech/parity-ethereum/pull/10254))
- Improve block and transaction propagation ([#9954](https://github.com/paritytech/parity-ethereum/pull/9954)) - Macos heapsize force jemalloc ([#10234](https://github.com/paritytech/parity-ethereum/pull/10234))
- Deny unknown fields for chainspec ([#9972](https://github.com/paritytech/parity-ethereum/pull/9972)) - Allow specifying local accounts via CLI ([#9960](https://github.com/paritytech/parity-ethereum/pull/9960))
- Fix docker build ([#9971](https://github.com/paritytech/parity-ethereum/pull/9971)) - Take in account zero gas price certification when doing transact_cont… ([#10232](https://github.com/paritytech/parity-ethereum/pull/10232))
- Ci: rearrange pipeline by logic ([#9970](https://github.com/paritytech/parity-ethereum/pull/9970)) - Update CHANGELOG.md ([#10249](https://github.com/paritytech/parity-ethereum/pull/10249))
- Add changelogs for 2.0.9, 2.1.4, 2.1.6, and 2.2.1 ([#9963](https://github.com/paritytech/parity-ethereum/pull/9963)) - Fix typo: CHANGELOG-2.1 -> CHANGELOG-2.2 ([#10233](https://github.com/paritytech/parity-ethereum/pull/10233))
- Add Error message when sync is still in progress. ([#9475](https://github.com/paritytech/parity-ethereum/pull/9475)) - Update copyright year to 2019. ([#10181](https://github.com/paritytech/parity-ethereum/pull/10181))
- Make CALLCODE to trace value to be the code address ([#9881](https://github.com/paritytech/parity-ethereum/pull/9881)) - Fixed: types::transaction::SignedTransaction; ([#10229](https://github.com/paritytech/parity-ethereum/pull/10229))
- Fix light client informant while syncing ([#9932](https://github.com/paritytech/parity-ethereum/pull/9932)) - Fix(ManageNetwork): replace Range with RangeInclusive ([#10209](https://github.com/paritytech/parity-ethereum/pull/10209))
- Add a optional json dump state to evm-bin ([#9706](https://github.com/paritytech/parity-ethereum/pull/9706)) - Import rpc transactions sequentially ([#10051](https://github.com/paritytech/parity-ethereum/pull/10051))
- Disable EIP-98 transition by default ([#9955](https://github.com/paritytech/parity-ethereum/pull/9955)) - Enable St-Peters-Fork ("Constantinople Fix") ([#10223](https://github.com/paritytech/parity-ethereum/pull/10223))
- Remove secret_store runtimes. ([#9888](https://github.com/paritytech/parity-ethereum/pull/9888)) - Add EIP-1283 disable transition ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
- Fix a deadlock ([#9952](https://github.com/paritytech/parity-ethereum/pull/9952)) - Echo CORS request headers by default ([#10221](https://github.com/paritytech/parity-ethereum/pull/10221))
- Chore(eip712): remove unused `failure-derive` ([#9958](https://github.com/paritytech/parity-ethereum/pull/9958)) - Happy New Year! ([#10211](https://github.com/paritytech/parity-ethereum/pull/10211))
- Do not use the home directory as the working dir in docker ([#9834](https://github.com/paritytech/parity-ethereum/pull/9834)) - Perform stripping during build ([#10208](https://github.com/paritytech/parity-ethereum/pull/10208))
- Prevent silent errors in daemon mode, closes [#9367](https://github.com/paritytech/parity-ethereum/issues/9367) ([#9946](https://github.com/paritytech/parity-ethereum/pull/9946)) - Remove CallContract and RegistryInfo re-exports from `ethcore/client` ([#10205](https://github.com/paritytech/parity-ethereum/pull/10205))
- Fix empty steps ([#9939](https://github.com/paritytech/parity-ethereum/pull/9939)) - Extract CallContract and RegistryInfo traits into their own crate ([#10178](https://github.com/paritytech/parity-ethereum/pull/10178))
- Adjust requests costs for light client ([#9925](https://github.com/paritytech/parity-ethereum/pull/9925)) - Update the changelogs for 2.1.11, 2.2.6, 2.2.7, and 2.3.0 ([#10197](https://github.com/paritytech/parity-ethereum/pull/10197))
- Eip-1186: add `eth_getProof` RPC-Method ([#9001](https://github.com/paritytech/parity-ethereum/pull/9001)) - Cancel Constantinople HF on POA Core ([#10198](https://github.com/paritytech/parity-ethereum/pull/10198))
- Missing blocks in filter_changes RPC ([#9947](https://github.com/paritytech/parity-ethereum/pull/9947)) - Adds cli interface to allow reseting chain to a particular block ([#9782](https://github.com/paritytech/parity-ethereum/pull/9782))
- Allow rust-nightly builds fail in nightly builds ([#9944](https://github.com/paritytech/parity-ethereum/pull/9944)) - Run all `igd` methods in its own thread ([#10195](https://github.com/paritytech/parity-ethereum/pull/10195))
- Update eth-secp256k1 to include fix for BSDs ([#9935](https://github.com/paritytech/parity-ethereum/pull/9935)) - Pull constantinople on ethereum network ([#10189](https://github.com/paritytech/parity-ethereum/pull/10189))
- Unbreak build on rust -stable ([#9934](https://github.com/paritytech/parity-ethereum/pull/9934)) - Update for Android cross-compilation. ([#10180](https://github.com/paritytech/parity-ethereum/pull/10180))
- Keep existing blocks when restoring a Snapshot ([#8643](https://github.com/paritytech/parity-ethereum/pull/8643)) - Version: bump fork blocks for kovan and foundation ([#10186](https://github.com/paritytech/parity-ethereum/pull/10186))
- Add experimental RPCs flag ([#9928](https://github.com/paritytech/parity-ethereum/pull/9928)) - Handle the case for contract creation on an empty but exist account w… ([#10065](https://github.com/paritytech/parity-ethereum/pull/10065))
- Clarify poll lifetime ([#9922](https://github.com/paritytech/parity-ethereum/pull/9922)) - Align personal_unlockAccount behaviour when permanent unlock is disab… ([#10060](https://github.com/paritytech/parity-ethereum/pull/10060))
- Docs(require rust 1.30) ([#9923](https://github.com/paritytech/parity-ethereum/pull/9923)) - Drop `runtime` after others (especially `ws_server`) ([#10179](https://github.com/paritytech/parity-ethereum/pull/10179))
- Use block header for building finality ([#9914](https://github.com/paritytech/parity-ethereum/pull/9914)) - Version: bump nightly to 2.4 ([#10165](https://github.com/paritytech/parity-ethereum/pull/10165))
- Simplify cargo audit ([#9918](https://github.com/paritytech/parity-ethereum/pull/9918)) - Skip locking in statedb for non-canon blocks ([#10141](https://github.com/paritytech/parity-ethereum/pull/10141))
- Light-fetch: Differentiate between out-of-gas/manual throw and use required gas from response on failure ([#9824](https://github.com/paritytech/parity-ethereum/pull/9824)) - Remove reference to ui-interface command-line option ([#10170](https://github.com/paritytech/parity-ethereum/pull/10170))
- Eip 191 ([#9701](https://github.com/paritytech/parity-ethereum/pull/9701)) - Fix [#9822](https://github.com/paritytech/parity-ethereum/pull/9822): trace_filter does not return failed contract creation ([#10140](https://github.com/paritytech/parity-ethereum/pull/10140))
- Fix(logger): `reqwest` no longer a dependency ([#9908](https://github.com/paritytech/parity-ethereum/pull/9908)) - Fix _cannot recursively call into `Core`_ issue ([#10144](https://github.com/paritytech/parity-ethereum/pull/10144))
- Remove rust-toolchain file ([#9906](https://github.com/paritytech/parity-ethereum/pull/9906)) - Fix(whisper): correct PoW calculation ([#10166](https://github.com/paritytech/parity-ethereum/pull/10166))
- Foundation: 6692865, ropsten: 4417537, kovan: 9363457 ([#9907](https://github.com/paritytech/parity-ethereum/pull/9907)) - Bump JSON-RPC ([#10151](https://github.com/paritytech/parity-ethereum/pull/10151))
- Ethcore: use Machine::verify_transaction on parent block ([#9900](https://github.com/paritytech/parity-ethereum/pull/9900)) - Ping nodes from discovery ([#10167](https://github.com/paritytech/parity-ethereum/pull/10167))
- Chore(rpc-tests): remove unused rand ([#9896](https://github.com/paritytech/parity-ethereum/pull/9896)) - Fix(android): remove dependency to libusb ([#10161](https://github.com/paritytech/parity-ethereum/pull/10161))
- Fix: Intermittent failing CI due to addr in use ([#9885](https://github.com/paritytech/parity-ethereum/pull/9885)) - Refactor(trim_right_matches -> trim_end_matches) ([#10159](https://github.com/paritytech/parity-ethereum/pull/10159))
- Chore(bump docopt): 0.8 -> 1.0 ([#9889](https://github.com/paritytech/parity-ethereum/pull/9889)) - Merge Machine and WithRewards ([#10071](https://github.com/paritytech/parity-ethereum/pull/10071))
- Use expect ([#9883](https://github.com/paritytech/parity-ethereum/pull/9883))
- Use Weak reference in PubSubClient ([#9886](https://github.com/paritytech/parity-ethereum/pull/9886))
- Ci: nuke the gitlab caches ([#9855](https://github.com/paritytech/parity-ethereum/pull/9855))
- Remove unused code ([#9884](https://github.com/paritytech/parity-ethereum/pull/9884))
- Fix json tracer overflow ([#9873](https://github.com/paritytech/parity-ethereum/pull/9873))
- Allow to seal work on latest block ([#9876](https://github.com/paritytech/parity-ethereum/pull/9876))
- Fix docker script ([#9854](https://github.com/paritytech/parity-ethereum/pull/9854))
- Health endpoint ([#9847](https://github.com/paritytech/parity-ethereum/pull/9847))
- Gitlab-ci: make android release build succeed ([#9743](https://github.com/paritytech/parity-ethereum/pull/9743))
- Clean up existing benchmarks ([#9839](https://github.com/paritytech/parity-ethereum/pull/9839))
- Update Callisto block reward code to support HF1 ([#9811](https://github.com/paritytech/parity-ethereum/pull/9811))
- Option to disable keep alive for JSON-RPC http transport ([#9848](https://github.com/paritytech/parity-ethereum/pull/9848))
- Classic.json Bootnode Update ([#9828](https://github.com/paritytech/parity-ethereum/pull/9828))
- Support MIX. ([#9767](https://github.com/paritytech/parity-ethereum/pull/9767))
- Ci: remove failing tests for android, windows, and macos ([#9788](https://github.com/paritytech/parity-ethereum/pull/9788))
- Implement NoProof for json tests and update tests reference (replaces [#9744](https://github.com/paritytech/parity-ethereum/issues/9744)) ([#9814](https://github.com/paritytech/parity-ethereum/pull/9814))
- Chore(bump regex) ([#9842](https://github.com/paritytech/parity-ethereum/pull/9842))
- Ignore global cache for patched accounts ([#9752](https://github.com/paritytech/parity-ethereum/pull/9752))
- Move state root verification before gas used ([#9841](https://github.com/paritytech/parity-ethereum/pull/9841))
- Fix(docker-aarch64) : cross-compile config ([#9798](https://github.com/paritytech/parity-ethereum/pull/9798))
- Version: bump nightly to 2.3.0 ([#9819](https://github.com/paritytech/parity-ethereum/pull/9819))
- Tests modification for windows CI ([#9671](https://github.com/paritytech/parity-ethereum/pull/9671))
- Eip-712 implementation ([#9631](https://github.com/paritytech/parity-ethereum/pull/9631))
- Fix typo ([#9826](https://github.com/paritytech/parity-ethereum/pull/9826))
- Clean up serde rename and use rename_all = camelCase when possible ([#9823](https://github.com/paritytech/parity-ethereum/pull/9823))
## Previous releases ## Previous releases
- [CHANGELOG-2.2](docs/CHANGELOG-2.2.md) (_stable_) - [CHANGELOG-2.3](docs/CHANGELOG-2.3.md) (_stable_)
- [CHANGELOG-2.2](docs/CHANGELOG-2.2.md) (EOL: 2019-02-25)
- [CHANGELOG-2.1](docs/CHANGELOG-2.1.md) (EOL: 2019-01-16) - [CHANGELOG-2.1](docs/CHANGELOG-2.1.md) (EOL: 2019-01-16)
- [CHANGELOG-2.0](docs/CHANGELOG-2.0.md) (EOL: 2018-11-15) - [CHANGELOG-2.0](docs/CHANGELOG-2.0.md) (EOL: 2018-11-15)
- [CHANGELOG-1.11](docs/CHANGELOG-1.11.md) (EOL: 2018-09-19) - [CHANGELOG-1.11](docs/CHANGELOG-1.11.md) (EOL: 2018-09-19)

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Note: Parity Ethereum 2.2 reached End-of-Life on 2019-02-25 (EOL).
## Parity-Ethereum [v2.2.11](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.11) (2019-02-21)
Parity-Ethereum 2.2.11-stable is a maintenance release that fixes snap and docker installations.
The full list of included changes:
- Stable: snap: release untagged versions from branches to the candidate ([#10357](https://github.com/paritytech/parity-ethereum/pull/10357)) ([#10372](https://github.com/paritytech/parity-ethereum/pull/10372))
- Snap: release untagged versions from branches to the candidate snap channel ([#10357](https://github.com/paritytech/parity-ethereum/pull/10357))
- Snap: add the removable-media plug ([#10377](https://github.com/paritytech/parity-ethereum/pull/10377))
- Exchanged old(azure) bootnodes with new(ovh) ones ([#10309](https://github.com/paritytech/parity-ethereum/pull/10309))
- Stable Backports ([#10353](https://github.com/paritytech/parity-ethereum/pull/10353))
- Version: bump stable to 2.2.11
- Snap: prefix version and populate candidate channel ([#10343](https://github.com/paritytech/parity-ethereum/pull/10343))
- Snap: populate candidate releases with beta snaps to avoid stale channel
- Snap: prefix version with v*
- No volumes are needed, just run -v volume:/path/in/the/container ([#10345](https://github.com/paritytech/parity-ethereum/pull/10345))
## Parity-Ethereum [v2.2.10](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.10) (2019-02-13)
Parity-Ethereum 2.2.10-stable is a security-relevant release. A bug in the JSONRPC-deserialization module can cause crashes of all versions of Parity Ethereum nodes if an attacker is able to submit a specially-crafted RPC to certain publicly available endpoints.
- https://www.parity.io/new-parity-ethereum-update-fixes-several-rpc-vulnerabilities/
The full list of included changes:
- Additional error for invalid gas ([#10327](https://github.com/paritytech/parity-ethereum/pull/10327)) ([#10329](https://github.com/paritytech/parity-ethereum/pull/10329))
- Backports for Stable 2.2.10 ([#10332](https://github.com/paritytech/parity-ethereum/pull/10332))
- fix(docker-aarch64) : cross-compile config ([#9798](https://github.com/paritytech/parity-ethereum/pull/9798))
- import rpc transactions sequentially ([#10051](https://github.com/paritytech/parity-ethereum/pull/10051))
- fix(docker): fix not receives SIGINT ([#10059](https://github.com/paritytech/parity-ethereum/pull/10059))
- snap: official image / test ([#10168](https://github.com/paritytech/parity-ethereum/pull/10168))
- perform stripping during build ([#10208](https://github.com/paritytech/parity-ethereum/pull/10208))
- Additional tests for uint/hash/bytes deserialization. ([#10279](https://github.com/paritytech/parity-ethereum/pull/10279))
- Don't run the CPP example on CI ([#10285](https://github.com/paritytech/parity-ethereum/pull/10285))
- CI optimizations ([#10297](https://github.com/paritytech/parity-ethereum/pull/10297))
- fix publish job ([#10317](https://github.com/paritytech/parity-ethereum/pull/10317))
- Add Statetest support for Constantinople Fix ([#10323](https://github.com/paritytech/parity-ethereum/pull/10323))
- Add helper for Timestamp overflows ([#10330](https://github.com/paritytech/parity-ethereum/pull/10330))
- Don't add discovery initiators to the node table ([#10305](https://github.com/paritytech/parity-ethereum/pull/10305))
- change docker image based on debian instead of ubuntu due to the chan ([#10336](https://github.com/paritytech/parity-ethereum/pull/10336))
- role back docker build image and docker deploy image to ubuntu:xenial based ([#10338](https://github.com/paritytech/parity-ethereum/pull/10338))
## Parity-Ethereum [v2.2.9](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.9) (2019-02-03)
Parity-Ethereum 2.2.9-stable is a security-relevant release. A bug in the JSONRPC-deserialization module can cause crashes of all versions of Parity Ethereum nodes if an attacker is able to submit a specially-crafted RPC to certain publicly available endpoints.
- https://www.parity.io/security-alert-parity-ethereum-03-02/
The full list of included changes:
- Additional tests for uint deserialization. ([#10279](https://github.com/paritytech/parity-ethereum/pull/10279)) ([#10281](https://github.com/paritytech/parity-ethereum/pull/10281))
- Version: bump stable to 2.2.9 ([#10282](https://github.com/paritytech/parity-ethereum/pull/10282))
## Parity-Ethereum [v2.2.8](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.8) (2019-02-01)
Parity-Ethereum 2.2.8-stable is a consensus-relevant release that enables _St. Petersfork_ on:
- Ethereum Block `7280000` (along with Constantinople)
- Kovan Block `10255201`
- Ropsten Block `4939394`
- POA Sokol Block `7026400`
In addition to this, Constantinople is cancelled for the POA Core network. Upgrading is mandatory for clients on any of these chains.
The full list of included changes:
- Backports for stable 2.2.8 ([#10224](https://github.com/paritytech/parity-ethereum/pull/10224))
- Update for Android cross-compilation. ([#10180](https://github.com/paritytech/parity-ethereum/pull/10180))
- Cancel Constantinople HF on POA Core ([#10198](https://github.com/paritytech/parity-ethereum/pull/10198))
- Add EIP-1283 disable transition ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
- Enable St-Peters-Fork ("Constantinople Fix") ([#10223](https://github.com/paritytech/parity-ethereum/pull/10223))
- Stable: Macos heapsize force jemalloc ([#10234](https://github.com/paritytech/parity-ethereum/pull/10234)) ([#10258](https://github.com/paritytech/parity-ethereum/pull/10258))
## Parity-Ethereum [v2.2.7](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.7) (2019-01-15) ## Parity-Ethereum [v2.2.7](https://github.com/paritytech/parity-ethereum/releases/tag/v2.2.7) (2019-01-15)
Parity-Ethereum 2.2.7-stable is a consensus-relevant security release that reverts Constantinople on the Ethereum network. Upgrading is mandatory for Ethereum, and strongly recommended for other networks. Parity-Ethereum 2.2.7-stable is a consensus-relevant security release that reverts Constantinople on the Ethereum network. Upgrading is mandatory for Ethereum, and strongly recommended for other networks.

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## Parity-Ethereum [v2.3.5](https://github.com/paritytech/parity-ethereum/releases/tag/v2.3.5) (2019-02-25)
Parity-Ethereum 2.3.5-stable is a bugfix release that improves performance and stability.
Note, all 2.2 releases and older are now unsupported and upgrading is recommended.
The full list of included changes:
- More Backports for Stable 2.3.5 ([#10430](https://github.com/paritytech/parity-ethereum/pull/10430))
- Revert some changes, could be buggy ([#10399](https://github.com/paritytech/parity-ethereum/pull/10399))
- Ci: clean up gitlab-ci.yml leftovers from previous merge ([#10429](https://github.com/paritytech/parity-ethereum/pull/10429))
- 10000 > 5000 ([#10422](https://github.com/paritytech/parity-ethereum/pull/10422))
- Fix underflow in pip, closes [#10419](https://github.com/paritytech/parity-ethereum/pull/10419) ([#10423](https://github.com/paritytech/parity-ethereum/pull/10423))
- Fix panic when logging directory does not exist, closes [#10420](https://github.com/paritytech/parity-ethereum/pull/10420) ([#10424](https://github.com/paritytech/parity-ethereum/pull/10424))
- Update hardcoded headers for Foundation, Ropsten, Kovan and Classic ([#10417](https://github.com/paritytech/parity-ethereum/pull/10417))
- Backports for Stable 2.3.5 ([#10414](https://github.com/paritytech/parity-ethereum/pull/10414))
- No-git for publish jobs, empty artifacts dir ([#10393](https://github.com/paritytech/parity-ethereum/pull/10393))
- Snap: reenable i386, arm64, armhf architecture publishing ([#10386](https://github.com/paritytech/parity-ethereum/pull/10386))
- Tx pool: always accept local transactions ([#10375](https://github.com/paritytech/parity-ethereum/pull/10375))
- Fix to_pod storage trie value decoding ([#10368)](https://github.com/paritytech/parity-ethereum/pull/10368))
- Version: mark 2.3.5 as stable
## Parity-Ethereum [v2.3.4](https://github.com/paritytech/parity-ethereum/releases/tag/v2.3.4) (2019-02-21)
Parity-Ethereum 2.3.4-beta is a maintenance release that fixes snap and docker installations.
The full list of included changes:
- Beta: snap: release untagged versions from branches to the candidate ([#10357](https://github.com/paritytech/parity-ethereum/pull/10357)) ([#10373](https://github.com/paritytech/parity-ethereum/pull/10373))
- Snap: release untagged versions from branches to the candidate snap channel ([#10357](https://github.com/paritytech/parity-ethereum/pull/10357))
- Snap: add the removable-media plug ([#10377](https://github.com/paritytech/parity-ethereum/pull/10377))
- Exchanged old(azure) bootnodes with new(ovh) ones ([#10309](https://github.com/paritytech/parity-ethereum/pull/10309))
- Beta Backports ([#10354](https://github.com/paritytech/parity-ethereum/pull/10354))
- Version: bump beta to 2.3.4
- Snap: prefix version and populate candidate channel ([#10343](https://github.com/paritytech/parity-ethereum/pull/10343))
- Snap: populate candidate releases with beta snaps to avoid stale channel
- Snap: prefix version with v*
- No volumes are needed, just run -v volume:/path/in/the/container ([#10345](https://github.com/paritytech/parity-ethereum/pull/10345))
## Parity-Ethereum [v2.3.3](https://github.com/paritytech/parity-ethereum/releases/tag/v2.3.3) (2019-02-13)
Parity-Ethereum 2.3.3-beta is a security-relevant release. A bug in the JSONRPC-deserialization module can cause crashes of all versions of Parity Ethereum nodes if an attacker is able to submit a specially-crafted RPC to certain publicly available endpoints.
- https://www.parity.io/new-parity-ethereum-update-fixes-several-rpc-vulnerabilities/
The full list of included changes:
- Additional error for invalid gas ([#10327](https://github.com/paritytech/parity-ethereum/pull/10327)) ([#10328](https://github.com/paritytech/parity-ethereum/pull/10328))
- Backports for Beta 2.3.3 ([#10333](https://github.com/paritytech/parity-ethereum/pull/10333))
- Properly handle check_epoch_end_signal errors ([#10015](https://github.com/paritytech/parity-ethereum/pull/10015))
- import rpc transactions sequentially ([#10051](https://github.com/paritytech/parity-ethereum/pull/10051))
- fix(docker): fix not receives SIGINT ([#10059](https://github.com/paritytech/parity-ethereum/pull/10059))
- snap: official image / test ([#10168](https://github.com/paritytech/parity-ethereum/pull/10168))
- Extract CallContract and RegistryInfo traits into their own crate ([#10178](https://github.com/paritytech/parity-ethereum/pull/10178))
- perform stripping during build ([#10208](https://github.com/paritytech/parity-ethereum/pull/10208))
- Remove CallContract and RegistryInfo re-exports from `ethcore/client` ([#10205](https://github.com/paritytech/parity-ethereum/pull/10205))
- fixed: types::transaction::SignedTransaction; ([#10229](https://github.com/paritytech/parity-ethereum/pull/10229))
- Additional tests for uint/hash/bytes deserialization. ([#10279](https://github.com/paritytech/parity-ethereum/pull/10279))
- Fix Windows build ([#10284](https://github.com/paritytech/parity-ethereum/pull/10284))
- Don't run the CPP example on CI ([#10285](https://github.com/paritytech/parity-ethereum/pull/10285))
- CI optimizations ([#10297](https://github.com/paritytech/parity-ethereum/pull/10297))
- fix publish job ([#10317](https://github.com/paritytech/parity-ethereum/pull/10317))
- Add Statetest support for Constantinople Fix ([#10323](https://github.com/paritytech/parity-ethereum/pull/10323))
- Add helper for Timestamp overflows ([#10330](https://github.com/paritytech/parity-ethereum/pull/10330))
- Don't add discovery initiators to the node table ([#10305](https://github.com/paritytech/parity-ethereum/pull/10305))
- change docker image based on debian instead of ubuntu due to the chan ([#10336](https://github.com/paritytech/parity-ethereum/pull/10336))
- role back docker build image and docker deploy image to ubuntu:xenial based ([#10338](https://github.com/paritytech/parity-ethereum/pull/10338))
## Parity-Ethereum [v2.3.2](https://github.com/paritytech/parity-ethereum/releases/tag/v2.3.2) (2019-02-03)
Parity-Ethereum 2.3.2-stable is a security-relevant release. A bug in the JSONRPC-deserialization module can cause crashes of all versions of Parity Ethereum nodes if an attacker is able to submit a specially-crafted RPC to certain publicly available endpoints.
- https://www.parity.io/security-alert-parity-ethereum-03-02/
The full list of included changes:
- Version: bump beta to 2.3.2 ([#10283](https://github.com/paritytech/parity-ethereum/pull/10283))
- Additional tests for uint deserialization. ([#10279](https://github.com/paritytech/parity-ethereum/pull/10279)) ([#10280](https://github.com/paritytech/parity-ethereum/pull/10280))
- Backport [#10285](https://github.com/paritytech/parity-ethereum/pull/10285) to beta ([#10286](https://github.com/paritytech/parity-ethereum/pull/10286))
## Parity-Ethereum [v2.3.1](https://github.com/paritytech/parity-ethereum/releases/tag/v2.3.1) (2019-02-01)
Parity-Ethereum 2.3.1-beta is a consensus-relevant release that enables _St. Petersfork_ on:
- Ethereum Block `7280000` (along with Constantinople)
- Kovan Block `10255201`
- Ropsten Block `4939394`
- POA Sokol Block `7026400`
In addition to this, Constantinople is cancelled for the POA Core network. Upgrading is mandatory for clients on any of these chains.
The full list of included changes:
- Backports for beta 2.3.1 ([#10225](https://github.com/paritytech/parity-ethereum/pull/10225))
- Fix _cannot recursively call into `Core`_ issue ([#10144](https://github.com/paritytech/parity-ethereum/pull/10144))
- Update for Android cross-compilation. ([#10180](https://github.com/paritytech/parity-ethereum/pull/10180))
- Fix _cannot recursively call into `Core`_ - Part 2 ([#10195](https://github.com/paritytech/parity-ethereum/pull/10195))
- Cancel Constantinople HF on POA Core ([#10198](https://github.com/paritytech/parity-ethereum/pull/10198))
- Add EIP-1283 disable transition ([#10214](https://github.com/paritytech/parity-ethereum/pull/10214))
- Enable St-Peters-Fork ("Constantinople Fix") ([#10223](https://github.com/paritytech/parity-ethereum/pull/10223))
- Beta: Macos heapsize force jemalloc ([#10234](https://github.com/paritytech/parity-ethereum/pull/10234)) ([#10259](https://github.com/paritytech/parity-ethereum/pull/10259))
## Parity-Ethereum [v2.3.0](https://github.com/paritytech/parity-ethereum/releases/tag/v2.3.0) (2019-01-16)
Parity-Ethereum 2.3.0-beta is a consensus-relevant security release that reverts Constantinople on the Ethereum network. Upgrading is mandatory for Ethereum, and strongly recommended for other networks.
- **Consensus** - Ethereum Network: Pull Constantinople protocol upgrade on Ethereum ([#10189](https://github.com/paritytech/parity-ethereum/pull/10189))
- Read more: [Security Alert: Ethereum Constantinople Postponement](https://blog.ethereum.org/2019/01/15/security-alert-ethereum-constantinople-postponement/)
- **Networking** - All networks: Ping nodes from discovery ([#10167](https://github.com/paritytech/parity-ethereum/pull/10167))
- **Wasm** - Kovan Network: Update pwasm-utils to 0.6.1 ([#10134](https://github.com/paritytech/parity-ethereum/pull/10134))
Other notable changes:
- Existing blocks in the database are now kept when restoring a Snapshot. ([#8643](https://github.com/paritytech/parity-ethereum/pull/8643))
- Block and transaction propagation is improved significantly. ([#9954](https://github.com/paritytech/parity-ethereum/pull/9954))
- The ERC-191 Signed Data Standard is now supported by `personal_sign191`. ([#9701](https://github.com/paritytech/parity-ethereum/pull/9701))
- Add support for ERC-191/712 `eth_signTypedData` as a standard for machine-verifiable and human-readable typed data signing with Ethereum keys. ([#9631](https://github.com/paritytech/parity-ethereum/pull/9631))
- Add support for ERC-1186 `eth_getProof` ([#9001](https://github.com/paritytech/parity-ethereum/pull/9001))
- Add experimental RPCs flag to enable ERC-191, ERC-712, and ERC-1186 APIs via `--jsonrpc-experimental` ([#9928](https://github.com/paritytech/parity-ethereum/pull/9928))
- Make `CALLCODE` to trace value to be the code address. ([#9881](https://github.com/paritytech/parity-ethereum/pull/9881))
Configuration changes:
- The EIP-98 transition is now disabled by default. If you previously had no `eip98transition` specified in your chain specification, you would enable this now manually on block `0x0`. ([#9955](https://github.com/paritytech/parity-ethereum/pull/9955))
- Also, unknown fields in chain specs are now rejected. ([#9972](https://github.com/paritytech/parity-ethereum/pull/9972))
- The Tendermint engine was removed from Parity Ethereum and is no longer available and maintained. ([#9980](https://github.com/paritytech/parity-ethereum/pull/9980))
- Ropsten testnet data and keys moved from `test/` to `ropsten/` subdir. To reuse your old keys and data either copy or symlink them to the new location. ([#10123](https://github.com/paritytech/parity-ethereum/pull/10123))
- Strict empty steps validation ([#10041](https://github.com/paritytech/parity-ethereum/pull/10041))
- If you have a chain with`empty_steps` already running, some blocks most likely contain non-strict entries (unordered or duplicated empty steps). In this release `strict_empty_steps_transition` is enabled by default at block `0x0` for any chain with `empty_steps`.
- If your network uses `empty_steps` you **must** (A) plan a hard fork and change `strict_empty_steps_transition` to the desired fork block and (B) update the clients of the whole network to 2.2.7-stable / 2.3.0-beta. If for some reason you don't want to do this please set`strict_empty_steps_transition` to `0xfffffffff` to disable it.
_Note:_ This release marks Parity 2.3 as _beta_. All versions of Parity 2.2 are now considered _stable_.
The full list of included changes:
- Backports for 2.3.0 beta ([#10164](https://github.com/paritytech/parity-ethereum/pull/10164))
- Snap: fix path in script ([#10157](https://github.com/paritytech/parity-ethereum/pull/10157))
- Make sure parent block is not in importing queue when importing ancient blocks ([#10138](https://github.com/paritytech/parity-ethereum/pull/10138))
- Ci: re-enable snap publishing ([#10142](https://github.com/paritytech/parity-ethereum/pull/10142))
- Hf in POA Core (2019-01-18) - Constantinople ([#10155](https://github.com/paritytech/parity-ethereum/pull/10155))
- Update EWF's tobalaba chainspec ([#10152](https://github.com/paritytech/parity-ethereum/pull/10152))
- Replace ethcore-logger with env-logger. ([#10102](https://github.com/paritytech/parity-ethereum/pull/10102))
- Finality: dont require chain head to be in the chain ([#10054](https://github.com/paritytech/parity-ethereum/pull/10054))
- Remove caching for node connections ([#10143](https://github.com/paritytech/parity-ethereum/pull/10143))
- Blooms file iterator empty on out of range position. ([#10145](https://github.com/paritytech/parity-ethereum/pull/10145))
- Autogen docs for the "Configuring Parity Ethereum" wiki page. ([#10067](https://github.com/paritytech/parity-ethereum/pull/10067))
- Misc: bump license header to 2019 ([#10135](https://github.com/paritytech/parity-ethereum/pull/10135))
- Hide most of the logs from cpp example. ([#10139](https://github.com/paritytech/parity-ethereum/pull/10139))
- Don't try to send oversized packets ([#10042](https://github.com/paritytech/parity-ethereum/pull/10042))
- Private tx enabled flag added into STATUS packet ([#9999](https://github.com/paritytech/parity-ethereum/pull/9999))
- Update pwasm-utils to 0.6.1 ([#10134](https://github.com/paritytech/parity-ethereum/pull/10134))
- Extract blockchain from ethcore ([#10114](https://github.com/paritytech/parity-ethereum/pull/10114))
- Ethcore: update hardcoded headers ([#10123](https://github.com/paritytech/parity-ethereum/pull/10123))
- Identity fix ([#10128](https://github.com/paritytech/parity-ethereum/pull/10128))
- Use LenCachingMutex to optimize verification. ([#10117](https://github.com/paritytech/parity-ethereum/pull/10117))
- Pyethereum keystore support ([#9710](https://github.com/paritytech/parity-ethereum/pull/9710))
- Bump rocksdb-sys to 0.5.5 ([#10124](https://github.com/paritytech/parity-ethereum/pull/10124))
- Parity-clib: `async C bindings to RPC requests` + `subscribe/unsubscribe to websocket events` ([#9920](https://github.com/paritytech/parity-ethereum/pull/9920))
- Refactor (hardware wallet) : reduce the number of threads ([#9644](https://github.com/paritytech/parity-ethereum/pull/9644))
- Hf in POA Sokol (2019-01-04) ([#10077](https://github.com/paritytech/parity-ethereum/pull/10077))
- Fix broken links ([#10119](https://github.com/paritytech/parity-ethereum/pull/10119))
- Follow-up to [#10105](https://github.com/paritytech/parity-ethereum/issues/10105) ([#10107](https://github.com/paritytech/parity-ethereum/pull/10107))
- Move EIP-712 crate back to parity-ethereum ([#10106](https://github.com/paritytech/parity-ethereum/pull/10106))
- Move a bunch of stuff around ([#10101](https://github.com/paritytech/parity-ethereum/pull/10101))
- Revert "Add --frozen when running cargo ([#10081](https://github.com/paritytech/parity-ethereum/pull/10081))" ([#10105](https://github.com/paritytech/parity-ethereum/pull/10105))
- Fix left over small grumbles on whitespaces ([#10084](https://github.com/paritytech/parity-ethereum/pull/10084))
- Add --frozen when running cargo ([#10081](https://github.com/paritytech/parity-ethereum/pull/10081))
- Fix pubsub new_blocks notifications to include all blocks ([#9987](https://github.com/paritytech/parity-ethereum/pull/9987))
- Update some dependencies for compilation with pc-windows-gnu ([#10082](https://github.com/paritytech/parity-ethereum/pull/10082))
- Fill transaction hash on ethGetLog of light client. ([#9938](https://github.com/paritytech/parity-ethereum/pull/9938))
- Update changelog update for 2.2.5-beta and 2.1.10-stable ([#10064](https://github.com/paritytech/parity-ethereum/pull/10064))
- Implement len caching for parking_lot RwLock ([#10032](https://github.com/paritytech/parity-ethereum/pull/10032))
- Update parking_lot to 0.7 ([#10050](https://github.com/paritytech/parity-ethereum/pull/10050))
- Bump crossbeam. ([#10048](https://github.com/paritytech/parity-ethereum/pull/10048))
- Ethcore: enable constantinople on ethereum ([#10031](https://github.com/paritytech/parity-ethereum/pull/10031))
- Strict empty steps validation ([#10041](https://github.com/paritytech/parity-ethereum/pull/10041))
- Center the Subtitle, use some CAPS ([#10034](https://github.com/paritytech/parity-ethereum/pull/10034))
- Change test miner max memory to malloc reports. ([#10024](https://github.com/paritytech/parity-ethereum/pull/10024))
- Sort the storage for private state ([#10018](https://github.com/paritytech/parity-ethereum/pull/10018))
- Fix: test corpus_inaccessible panic ([#10019](https://github.com/paritytech/parity-ethereum/pull/10019))
- Ci: move future releases to ethereum subdir on s3 ([#10017](https://github.com/paritytech/parity-ethereum/pull/10017))
- Light(on_demand): decrease default time window to 10 secs ([#10016](https://github.com/paritytech/parity-ethereum/pull/10016))
- Light client : failsafe crate (circuit breaker) ([#9790](https://github.com/paritytech/parity-ethereum/pull/9790))
- Lencachingmutex ([#9988](https://github.com/paritytech/parity-ethereum/pull/9988))
- Version and notification for private contract wrapper added ([#9761](https://github.com/paritytech/parity-ethereum/pull/9761))
- Handle failing case for update account cache in require ([#9989](https://github.com/paritytech/parity-ethereum/pull/9989))
- Add tokio runtime to ethcore io worker ([#9979](https://github.com/paritytech/parity-ethereum/pull/9979))
- Move daemonize before creating account provider ([#10003](https://github.com/paritytech/parity-ethereum/pull/10003))
- Docs: update changelogs ([#9990](https://github.com/paritytech/parity-ethereum/pull/9990))
- Fix daemonize ([#10000](https://github.com/paritytech/parity-ethereum/pull/10000))
- Fix Bloom migration ([#9992](https://github.com/paritytech/parity-ethereum/pull/9992))
- Remove tendermint engine support ([#9980](https://github.com/paritytech/parity-ethereum/pull/9980))
- Calculate gas for deployment transaction ([#9840](https://github.com/paritytech/parity-ethereum/pull/9840))
- Fix unstable peers and slowness in sync ([#9967](https://github.com/paritytech/parity-ethereum/pull/9967))
- Adds parity_verifySignature RPC method ([#9507](https://github.com/paritytech/parity-ethereum/pull/9507))
- Improve block and transaction propagation ([#9954](https://github.com/paritytech/parity-ethereum/pull/9954))
- Deny unknown fields for chainspec ([#9972](https://github.com/paritytech/parity-ethereum/pull/9972))
- Fix docker build ([#9971](https://github.com/paritytech/parity-ethereum/pull/9971))
- Ci: rearrange pipeline by logic ([#9970](https://github.com/paritytech/parity-ethereum/pull/9970))
- Add changelogs for 2.0.9, 2.1.4, 2.1.6, and 2.2.1 ([#9963](https://github.com/paritytech/parity-ethereum/pull/9963))
- Add Error message when sync is still in progress. ([#9475](https://github.com/paritytech/parity-ethereum/pull/9475))
- Make CALLCODE to trace value to be the code address ([#9881](https://github.com/paritytech/parity-ethereum/pull/9881))
- Fix light client informant while syncing ([#9932](https://github.com/paritytech/parity-ethereum/pull/9932))
- Add a optional json dump state to evm-bin ([#9706](https://github.com/paritytech/parity-ethereum/pull/9706))
- Disable EIP-98 transition by default ([#9955](https://github.com/paritytech/parity-ethereum/pull/9955))
- Remove secret_store runtimes. ([#9888](https://github.com/paritytech/parity-ethereum/pull/9888))
- Fix a deadlock ([#9952](https://github.com/paritytech/parity-ethereum/pull/9952))
- Chore(eip712): remove unused `failure-derive` ([#9958](https://github.com/paritytech/parity-ethereum/pull/9958))
- Do not use the home directory as the working dir in docker ([#9834](https://github.com/paritytech/parity-ethereum/pull/9834))
- Prevent silent errors in daemon mode, closes [#9367](https://github.com/paritytech/parity-ethereum/issues/9367) ([#9946](https://github.com/paritytech/parity-ethereum/pull/9946))
- Fix empty steps ([#9939](https://github.com/paritytech/parity-ethereum/pull/9939))
- Adjust requests costs for light client ([#9925](https://github.com/paritytech/parity-ethereum/pull/9925))
- Eip-1186: add `eth_getProof` RPC-Method ([#9001](https://github.com/paritytech/parity-ethereum/pull/9001))
- Missing blocks in filter_changes RPC ([#9947](https://github.com/paritytech/parity-ethereum/pull/9947))
- Allow rust-nightly builds fail in nightly builds ([#9944](https://github.com/paritytech/parity-ethereum/pull/9944))
- Update eth-secp256k1 to include fix for BSDs ([#9935](https://github.com/paritytech/parity-ethereum/pull/9935))
- Unbreak build on rust -stable ([#9934](https://github.com/paritytech/parity-ethereum/pull/9934))
- Keep existing blocks when restoring a Snapshot ([#8643](https://github.com/paritytech/parity-ethereum/pull/8643))
- Add experimental RPCs flag ([#9928](https://github.com/paritytech/parity-ethereum/pull/9928))
- Clarify poll lifetime ([#9922](https://github.com/paritytech/parity-ethereum/pull/9922))
- Docs(require rust 1.30) ([#9923](https://github.com/paritytech/parity-ethereum/pull/9923))
- Use block header for building finality ([#9914](https://github.com/paritytech/parity-ethereum/pull/9914))
- Simplify cargo audit ([#9918](https://github.com/paritytech/parity-ethereum/pull/9918))
- Light-fetch: Differentiate between out-of-gas/manual throw and use required gas from response on failure ([#9824](https://github.com/paritytech/parity-ethereum/pull/9824))
- Eip 191 ([#9701](https://github.com/paritytech/parity-ethereum/pull/9701))
- Fix(logger): `reqwest` no longer a dependency ([#9908](https://github.com/paritytech/parity-ethereum/pull/9908))
- Remove rust-toolchain file ([#9906](https://github.com/paritytech/parity-ethereum/pull/9906))
- Foundation: 6692865, ropsten: 4417537, kovan: 9363457 ([#9907](https://github.com/paritytech/parity-ethereum/pull/9907))
- Ethcore: use Machine::verify_transaction on parent block ([#9900](https://github.com/paritytech/parity-ethereum/pull/9900))
- Chore(rpc-tests): remove unused rand ([#9896](https://github.com/paritytech/parity-ethereum/pull/9896))
- Fix: Intermittent failing CI due to addr in use ([#9885](https://github.com/paritytech/parity-ethereum/pull/9885))
- Chore(bump docopt): 0.8 -> 1.0 ([#9889](https://github.com/paritytech/parity-ethereum/pull/9889))
- Use expect ([#9883](https://github.com/paritytech/parity-ethereum/pull/9883))
- Use Weak reference in PubSubClient ([#9886](https://github.com/paritytech/parity-ethereum/pull/9886))
- Ci: nuke the gitlab caches ([#9855](https://github.com/paritytech/parity-ethereum/pull/9855))
- Remove unused code ([#9884](https://github.com/paritytech/parity-ethereum/pull/9884))
- Fix json tracer overflow ([#9873](https://github.com/paritytech/parity-ethereum/pull/9873))
- Allow to seal work on latest block ([#9876](https://github.com/paritytech/parity-ethereum/pull/9876))
- Fix docker script ([#9854](https://github.com/paritytech/parity-ethereum/pull/9854))
- Health endpoint ([#9847](https://github.com/paritytech/parity-ethereum/pull/9847))
- Gitlab-ci: make android release build succeed ([#9743](https://github.com/paritytech/parity-ethereum/pull/9743))
- Clean up existing benchmarks ([#9839](https://github.com/paritytech/parity-ethereum/pull/9839))
- Update Callisto block reward code to support HF1 ([#9811](https://github.com/paritytech/parity-ethereum/pull/9811))
- Option to disable keep alive for JSON-RPC http transport ([#9848](https://github.com/paritytech/parity-ethereum/pull/9848))
- Classic.json Bootnode Update ([#9828](https://github.com/paritytech/parity-ethereum/pull/9828))
- Support MIX. ([#9767](https://github.com/paritytech/parity-ethereum/pull/9767))
- Ci: remove failing tests for android, windows, and macos ([#9788](https://github.com/paritytech/parity-ethereum/pull/9788))
- Implement NoProof for json tests and update tests reference (replaces [#9744](https://github.com/paritytech/parity-ethereum/issues/9744)) ([#9814](https://github.com/paritytech/parity-ethereum/pull/9814))
- Chore(bump regex) ([#9842](https://github.com/paritytech/parity-ethereum/pull/9842))
- Ignore global cache for patched accounts ([#9752](https://github.com/paritytech/parity-ethereum/pull/9752))
- Move state root verification before gas used ([#9841](https://github.com/paritytech/parity-ethereum/pull/9841))
- Fix(docker-aarch64) : cross-compile config ([#9798](https://github.com/paritytech/parity-ethereum/pull/9798))
- Version: bump nightly to 2.3.0 ([#9819](https://github.com/paritytech/parity-ethereum/pull/9819))
- Tests modification for windows CI ([#9671](https://github.com/paritytech/parity-ethereum/pull/9671))
- Eip-712 implementation ([#9631](https://github.com/paritytech/parity-ethereum/pull/9631))
- Fix typo ([#9826](https://github.com/paritytech/parity-ethereum/pull/9826))
- Clean up serde rename and use rename_all = camelCase when possible ([#9823](https://github.com/paritytech/parity-ethereum/pull/9823))