chore(release): 0.6.0 [skip ci]

# [0.6.0](v0.5.0...v0.6.0) (2021-12-06)

### Bug Fixes

* **ci:** add missing go-version matrix to fix development branch CI ([ChainSafe#2037](https://github.com/timwu20/gossamer/issues/2037)) ([dfc6ce6](dfc6ce6))
* **cmd/cfg:** Use  Babe Lead value from toml config ([ChainSafe#2032](https://github.com/timwu20/gossamer/issues/2032)) ([406d083](406d083))
* confirm block import notifier is closed properly ([ChainSafe#1736](https://github.com/timwu20/gossamer/issues/1736)) ([ce4b9d7](ce4b9d7))
* **docs:** improve build-spec usage docs ([ChainSafe#1706](https://github.com/timwu20/gossamer/issues/1706)) ([65b4753](65b4753))
* **dot/core:** Add only extrinsic during chain reorg. ([ChainSafe#1609](https://github.com/timwu20/gossamer/issues/1609)) ([16340ef](16340ef))
* **dot/core:** Batch process transaction message. ([ChainSafe#1780](https://github.com/timwu20/gossamer/issues/1780)) ([3d209a3](3d209a3))
* **dot/core:** check transaction Validity.Propagate field to determine whether to propagate tx ([ChainSafe#1643](https://github.com/timwu20/gossamer/issues/1643)) ([81c8f0a](81c8f0a))
* **dot/core:** Fix handle transaction message test. ([ChainSafe#1607](https://github.com/timwu20/gossamer/issues/1607)) ([dca9ad7](dca9ad7))
* **dot/network, lib/grandpa:** fix handshake decoding and grandpa message handler sigabort ([ChainSafe#1631](https://github.com/timwu20/gossamer/issues/1631)) ([b02525b](b02525b))
* **dot/network, lib/grandpa:** fix node sync, improve devnet finality ([de91262](de91262))
* **dot/network:** add nil checks in connManager ([ChainSafe#2069](https://github.com/timwu20/gossamer/issues/2069)) ([09e07cf](09e07cf))
* **dot/network:** Check for size when decoding leb128. ([ChainSafe#1634](https://github.com/timwu20/gossamer/issues/1634)) ([c20a83c](c20a83c))
* **dot/network:** check if peer supports protocol ([ChainSafe#1617](https://github.com/timwu20/gossamer/issues/1617)) ([fb26dd2](fb26dd2))
* **dot/network:** decrease DHT find peers interval for gssmr nodes ([ChainSafe#1703](https://github.com/timwu20/gossamer/issues/1703)) ([7823c57](7823c57))
* **dot/network:** fix bugs in notifications protocol handlers; add metrics for inbound/outbound streams ([ChainSafe#2010](https://github.com/timwu20/gossamer/issues/2010)) ([88174ca](88174ca))
* **dot/network:** fix dht connection on discovery on devnet ([ChainSafe#2059](https://github.com/timwu20/gossamer/issues/2059)) ([d9008aa](d9008aa))
* **dot/network:** fix discovery between gossamer nodes ([ChainSafe#1594](https://github.com/timwu20/gossamer/issues/1594)) ([ec59e3b](ec59e3b))
* **dot/network:** fix memory allocations with `sizedBufferPool` ([ChainSafe#1963](https://github.com/timwu20/gossamer/issues/1963)) ([ddd96f7](ddd96f7))
* **dot/network:** Fix missing digest in header ([ChainSafe#2092](https://github.com/timwu20/gossamer/issues/2092)) ([6f34b1b](6f34b1b))
* **dot/network:** fix stream manager tests ([ChainSafe#1683](https://github.com/timwu20/gossamer/issues/1683)) ([2b4353c](2b4353c))
* **dot/network:** implement a handshake timeout ([ChainSafe#1615](https://github.com/timwu20/gossamer/issues/1615)) ([4ab856e](4ab856e))
* **dot/network:** Implement time based handle transaction ([ChainSafe#1942](https://github.com/timwu20/gossamer/issues/1942)) ([72455d1](72455d1))
* **dot/network:** move low reputation peer removal from network ConnManager to peer scoring logic (dot/peerstate) ([ChainSafe#2068](https://github.com/timwu20/gossamer/issues/2068)) ([8ea3d9f](8ea3d9f)), closes [ChainSafe#2039](https://github.com/timwu20/gossamer/issues/2039)
* **dot/network:** Return on EOF error while reading stream. ([ChainSafe#1733](https://github.com/timwu20/gossamer/issues/1733)) ([a9d32fb](a9d32fb))
* **dot/node:** Start websocket server only with `--ws` flag ([ChainSafe#1671](https://github.com/timwu20/gossamer/issues/1671)) ([fd43774](fd43774))
* **dot/state, lib/babe, lib/trie:** improve syncing between gossamer authority nodes ([ChainSafe#1613](https://github.com/timwu20/gossamer/issues/1613)) ([2e62a3d](2e62a3d))
* **dot/state, lib/grandpa:** update justification and SignedVote handling in database ([ChainSafe#1682](https://github.com/timwu20/gossamer/issues/1682)) ([9dda6b5](9dda6b5))
* **dot/state:** add StorageState Lock/Unlock API for usage by babe and sync  ([ChainSafe#1700](https://github.com/timwu20/gossamer/issues/1700)) ([eaf8ba9](eaf8ba9))
* **dot/state:** fix deadlock, fixes bootstrap syncing ([ChainSafe#1959](https://github.com/timwu20/gossamer/issues/1959)) ([13c92ea](13c92ea))
* **dot/state:** track runtime per-block, fix runtime upgrades differing between forks ([ChainSafe#1638](https://github.com/timwu20/gossamer/issues/1638)) ([b31bba5](b31bba5))
* **dot/state:** update `*state.BlockState.AddBlockToBlockTree` to store block in `unfinalisedBlocksMap` ([ChainSafe#2006](https://github.com/timwu20/gossamer/issues/2006)) ([8fac690](8fac690))
* **dot/sync:** add nil header checks ([ChainSafe#2099](https://github.com/timwu20/gossamer/issues/2099)) ([abbefce](abbefce))
* **dot/sync:** fix block request and response logic ([ChainSafe#1907](https://github.com/timwu20/gossamer/issues/1907)) ([fcfbabe](fcfbabe))
* **dot/sync:** fix creating block response, fixes node sync between gossamer nodes ([ChainSafe#1572](https://github.com/timwu20/gossamer/issues/1572)) ([d2197b0](d2197b0))
* **dot/telemetry:** refactor telemetry to reduce CPU usage ([ChainSafe#1597](https://github.com/timwu20/gossamer/issues/1597)) ([3445d84](3445d84))
* **dot/types:** *types.Body to be of type []types.Extrinsic ([ChainSafe#1807](https://github.com/timwu20/gossamer/issues/1807)) ([953d6f4](953d6f4))
* **dot/types:** fix max value for digest ([ChainSafe#1687](https://github.com/timwu20/gossamer/issues/1687)) ([13380af](13380af))
* **dot:** fix `TestNewNode` ([ChainSafe#2070](https://github.com/timwu20/gossamer/issues/2070)) ([87f41ba](87f41ba))
* fix Kusama sync; add storageState lock in core.HandleTransactionMessage ([ChainSafe#1783](https://github.com/timwu20/gossamer/issues/1783)) ([d03f6d1](d03f6d1))
* **lib/babe, lib/runtime/wasmer:** fixes for v0.9.8+ runtime ([ChainSafe#2075](https://github.com/timwu20/gossamer/issues/2075)) ([eb963d3](eb963d3))
* **lib/babe:** add `--babe-lead` flag, update epoch handling logic ([ChainSafe#1895](https://github.com/timwu20/gossamer/issues/1895)) ([8a65c7f](8a65c7f))
* **lib/babe:** add pre-runtime digest before calling initialize_block ([ChainSafe#1581](https://github.com/timwu20/gossamer/issues/1581)) ([f0060ae](f0060ae))
* **lib/babe:** always use 2/3 of slot to produce block, re-add potentially valid txs to queue ([ChainSafe#1679](https://github.com/timwu20/gossamer/issues/1679)) ([b224f10](b224f10))
* **lib/babe:** call AddBlock in BABE synchronously ([ChainSafe#1585](https://github.com/timwu20/gossamer/issues/1585)) ([549dc25](549dc25))
* **lib/babe:** fix err log ([ChainSafe#1801](https://github.com/timwu20/gossamer/issues/1801)) ([0ab395b](0ab395b))
* **lib/babe:** fix setting first slot of network, fix loading BABE epoch params ([ChainSafe#1640](https://github.com/timwu20/gossamer/issues/1640)) ([63f73ca](63f73ca))
* **lib/babe:** fix timing for transition between epochs ([ChainSafe#1636](https://github.com/timwu20/gossamer/issues/1636)) ([e67b1e2](e67b1e2))
* **lib/blocktree:** fix blocktree bug  ([ChainSafe#2060](https://github.com/timwu20/gossamer/issues/2060)) ([de8f573](de8f573))
* **lib/blocktree:** fix potential nil pointer dereference in `HighestCommonAncestor`, core `handleBlocksAsync` ([ChainSafe#1993](https://github.com/timwu20/gossamer/issues/1993)) ([7006320](7006320))
* **lib/blocktree:** fix setting leaves after blocktree pruning ([ChainSafe#1605](https://github.com/timwu20/gossamer/issues/1605)) ([a00f881](a00f881))
* **lib/blocktree:** removes the inconsistency to choose a deepest leaf ([ChainSafe#2094](https://github.com/timwu20/gossamer/issues/2094)) ([5210dc0](5210dc0))
* **lib/genesis:** Update missing and incorrect fields in genesis file. ([ChainSafe#1681](https://github.com/timwu20/gossamer/issues/1681)) ([f00a5a2](f00a5a2))
* **lib/grandpa:** fix grandpa stall and various bugs ([ChainSafe#1708](https://github.com/timwu20/gossamer/issues/1708)) ([fe67586](fe67586))
* **lib/grandpa:** fix grandpa vote message switch ([ChainSafe#2095](https://github.com/timwu20/gossamer/issues/2095)) ([8312490](8312490))
* **lib/grandpa:** fix threshold checking to be strictly greater than 2/3 ([ChainSafe#1891](https://github.com/timwu20/gossamer/issues/1891)) ([ed51f97](ed51f97))
* **lib/grandpa:** use `defaultGrandpaInterval` if not set, fixes error on startup ([ChainSafe#1982](https://github.com/timwu20/gossamer/issues/1982)) ([84e2005](84e2005))
* **lib/runtime/life:** remove import C from life ([ChainSafe#1923](https://github.com/timwu20/gossamer/issues/1923)) ([b93152a](b93152a))
* **lib/runtime:** update HOST_API_TEST_RUNTIME_URL to reference specific commit ([ChainSafe#1885](https://github.com/timwu20/gossamer/issues/1885)) ([e6689e8](e6689e8))
* **log-levels:** do not ignore configuration file log levels ([ChainSafe#2016](https://github.com/timwu20/gossamer/issues/2016)) ([44c9b7a](44c9b7a))
* pending bubble hidden after block included ([ChainSafe#1592](https://github.com/timwu20/gossamer/issues/1592)) ([16e7eef](16e7eef))
* **pprof:** only run pprof service if enabled  ([ChainSafe#2073](https://github.com/timwu20/gossamer/issues/2073)) ([f45eff4](f45eff4))
* **rpc/subscription:** subscribe runtime version notify when version changes ([ChainSafe#1686](https://github.com/timwu20/gossamer/issues/1686)) ([d6e9ab0](d6e9ab0))
* Staging CI workflow ([ChainSafe#2034](https://github.com/timwu20/gossamer/issues/2034)) ([aaa633c](aaa633c))
* **trie:** memory leak fix in `lib/trie` ([ChainSafe#2009](https://github.com/timwu20/gossamer/issues/2009)) ([71a8a4f](71a8a4f))
* update deprecated package ([ChainSafe#1603](https://github.com/timwu20/gossamer/issues/1603)) ([ee5a5b6](ee5a5b6))
* update gssmr genesis to use pallet_babe::SameAuthoritiesForever ([ChainSafe#1696](https://github.com/timwu20/gossamer/issues/1696)) ([281eef2](281eef2))
* update HOST_API_TEST_RUNTIME_URL ([ChainSafe#1898](https://github.com/timwu20/gossamer/issues/1898)) ([afe350c](afe350c))
* **utils:** create a specific folder for database ([ChainSafe#1598](https://github.com/timwu20/gossamer/issues/1598)) ([4720d27](4720d27))

### Features

* add --chain dev option ([ChainSafe#1561](https://github.com/timwu20/gossamer/issues/1561)) ([dc8ee9d](dc8ee9d))
* **cmd/gossamer:** implement --telemetry-url parameter ([ChainSafe#1890](https://github.com/timwu20/gossamer/issues/1890)) ([154d6e2](154d6e2)), closes [ChainSafe#1502](https://github.com/timwu20/gossamer/issues/1502)
* **cmd:** implement offline pruning of state trie ([ChainSafe#1564](https://github.com/timwu20/gossamer/issues/1564)) ([d4d61c7](d4d61c7))
* **devnet:** Local Gossamer Devnet ([ChainSafe#2008](https://github.com/timwu20/gossamer/issues/2008)) ([23ce39f](23ce39f))
* **dot/network:** implement streamManager to cleanup not recently used streams ([ChainSafe#1611](https://github.com/timwu20/gossamer/issues/1611)) ([005932b](005932b))
* **dot/peerset:** Implement peer scoring ([ChainSafe#1791](https://github.com/timwu20/gossamer/issues/1791)) ([05f7e32](05f7e32))
* **dot/rpc/modules:** add `system_addReservedPeer` and `system_removeReservedPeer` RPC call ([ChainSafe#1712](https://github.com/timwu20/gossamer/issues/1712)) ([79c250e](79c250e))
* **dot/rpc:** Add `system_localListenAddresses` RPC call ([ChainSafe#1689](https://github.com/timwu20/gossamer/issues/1689)) ([0d199b5](0d199b5))
* **dot/rpc:** Implement `childstate_getKeys` rpc call ([ChainSafe#1800](https://github.com/timwu20/gossamer/issues/1800)) ([c5181ae](c5181ae))
* **dot/rpc:** implement sync_state_genSyncSpec RPC call  ([ChainSafe#1827](https://github.com/timwu20/gossamer/issues/1827)) ([9991a9c](9991a9c))
* **dot/state:** implement online pruning of historical state tries ([ChainSafe#1596](https://github.com/timwu20/gossamer/issues/1596)) ([31700c6](31700c6))
* **dot/sync:** implement codeSubstitutes ([ChainSafe#1635](https://github.com/timwu20/gossamer/issues/1635)) ([1a238b1](1a238b1))
* **dot/telemetry:** Added connection retry ([ChainSafe#1904](https://github.com/timwu20/gossamer/issues/1904)) ([1c0c5c7](1c0c5c7))
* **dot/telemetry:** Added more telemetry messages in grandpa client ([ChainSafe#2043](https://github.com/timwu20/gossamer/issues/2043)) ([7c870a4](7c870a4)), closes [ChainSafe#1841](https://github.com/timwu20/gossamer/issues/1841) [ChainSafe#1842](https://github.com/timwu20/gossamer/issues/1842)
* **dot/telemetry:** implement notify.finalized telemetry interface ([ChainSafe#1877](https://github.com/timwu20/gossamer/issues/1877)) ([b4e5ded](b4e5ded))
* **dot/telemetry:** implement substrate_number_leaves metrics ([ChainSafe#1926](https://github.com/timwu20/gossamer/issues/1926)) ([847de6a](847de6a))
* **dot/telemetry:** implement telemetry message network_state ([ChainSafe#1618](https://github.com/timwu20/gossamer/issues/1618)) ([73e99c9](73e99c9))
* **flags:** read log levels from flags ([ChainSafe#1953](https://github.com/timwu20/gossamer/issues/1953)) ([abf9f3a](abf9f3a))
* implement ext_default_child_storage_storage_kill_version_2 ([ChainSafe#1799](https://github.com/timwu20/gossamer/issues/1799)) ([541f580](541f580))
* implement ext_offchain_index_set_version_1 for wasmer runtime ([ChainSafe#1739](https://github.com/timwu20/gossamer/issues/1739)) ([619306d](619306d))
* **lib/babe:** add check of types.ConfigData.SecondarySlots for disabling secondary verification ([ChainSafe#1910](https://github.com/timwu20/gossamer/issues/1910)) ([7bc2e32](7bc2e32))
* **lib/grandpa:** Include equivocatory nodes while creating justification ([ChainSafe#1911](https://github.com/timwu20/gossamer/issues/1911)) ([af7725f](af7725f))
* **lib/runtime/wasmer:** implement ext_default_child_storage_storage_kill_version_3 ([ChainSafe#1878](https://github.com/timwu20/gossamer/issues/1878)) ([454689b](454689b))
* **lib/runtime/wasmer:** implement ext_offchain_local_storage_version_1 ([ChainSafe#1821](https://github.com/timwu20/gossamer/issues/1821)) ([01dbffc](01dbffc))
* **lib/runtime:** Implement `ext_offchain_http_request_add_header_version_1` host function ([ChainSafe#1994](https://github.com/timwu20/gossamer/issues/1994)) ([2e722c7](2e722c7))
* **lib/runtime:** Implement `ext_offchain_http_request_start_version_1` host function ([ChainSafe#1947](https://github.com/timwu20/gossamer/issues/1947)) ([4a8598b](4a8598b))
* **lib/runtime:** Implement `trie_blake2_256_verify_proof` host function ([ChainSafe#1920](https://github.com/timwu20/gossamer/issues/1920)) ([1bd33a6](1bd33a6))
* **lib/trie:** Implement `verify_proof` function ([ChainSafe#1883](https://github.com/timwu20/gossamer/issues/1883)) ([68650b7](68650b7))
* **lib/trie:** Implement limit for trie.ClearPrefix ([ChainSafe#1905](https://github.com/timwu20/gossamer/issues/1905)) ([9756b2c](9756b2c))
* **lib/trie:** Parallel hash trie. ([ChainSafe#1657](https://github.com/timwu20/gossamer/issues/1657)) ([22f0b2b](22f0b2b))
* **pprof:** Pprof HTTP server service ([ChainSafe#1991](https://github.com/timwu20/gossamer/issues/1991)) ([5996229](5996229))
* **rpc/subscription:** implement state_unsubscribeStorage ([ChainSafe#1574](https://github.com/timwu20/gossamer/issues/1574)) ([56f594a](56f594a))
* **rpc:** Implement `childstate_getChildStorage` RPC call ([ChainSafe#1832](https://github.com/timwu20/gossamer/issues/1832)) ([4977d06](4977d06))
* **rpc:** Implement `childstate_getStorageHash` RPC call ([ChainSafe#1805](https://github.com/timwu20/gossamer/issues/1805)) ([0e31754](0e31754))
* **rpc:** Implement `childstate_getStorageSize` RPC call ([ChainSafe#1810](https://github.com/timwu20/gossamer/issues/1810)) ([77f3458](77f3458))
* **rpc:** Implement `payment_queryInfo` RPC call ([ChainSafe#1826](https://github.com/timwu20/gossamer/issues/1826)) ([d6e3583](d6e3583))
* **rpc:** Implement `state_getReadProof` rpc call ([ChainSafe#1768](https://github.com/timwu20/gossamer/issues/1768)) ([00c4951](00c4951))
* **runtime:** implement custom logging handler that print function name ([ChainSafe#1825](https://github.com/timwu20/gossamer/issues/1825)) ([5301ce4](5301ce4))
* **telemetry:** send telemetry messages when GRANDPA receieves commit or vote messages ([ChainSafe#2015](https://github.com/timwu20/gossamer/issues/2015)) ([90d5577](90d5577)), closes [ChainSafe#1840](https://github.com/timwu20/gossamer/issues/1840) [ChainSafe#1839](https://github.com/timwu20/gossamer/issues/1839) [ChainSafe#1838](https://github.com/timwu20/gossamer/issues/1838)
* **telemetry:** send txpool.import telemetry msg ([ChainSafe#1966](https://github.com/timwu20/gossamer/issues/1966)) ([9f9c213](9f9c213))

### Reverts

* Revert "feat(dot/rpc) implement `author_hasSessionKeys` RPC call (ChainSafe#1704)" (ChainSafe#1714) ([ed56d29](ed56d29)), closes [ChainSafe#1704](https://github.com/timwu20/gossamer/issues/1704) [ChainSafe#1714](https://github.com/timwu20/gossamer/issues/1714)