v4.2.2 (#47)

This release includes dependency updates and removals.

CHANGELOG.md

@@ -6,6 +6,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+## [4.2.2] - 2021-02-04
+
+### Changed
+
+- Replace `await-semaphore` with `async-mutex` ([#33](https://github.com/MetaMask/eth-json-rpc-filters/pull/33))
+- Move `pify` to production dependencies and update to v5 ([#39](https://github.com/MetaMask/eth-json-rpc-filters/pull/39) and [#40](https://github.com/MetaMask/eth-json-rpc-filters/pull/40))
+- Cleanup manifest metadata ([#43](https://github.com/MetaMask/eth-json-rpc-filters/pull/43) and [#42](https://github.com/MetaMask/eth-json-rpc-filters/pull/42))
+- Update `json-rpc-engine` from v5 to v6 ([#35](https://github.com/MetaMask/eth-json-rpc-filters/pull/35))
+- Update to `@metamask/safe-event-emitter` v2 ([#37](https://github.com/MetaMask/eth-json-rpc-filters/pull/37))
+- Remove `lodash.flatmap` dependency ([#36](https://github.com/MetaMask/eth-json-rpc-filters/pull/36))
+
 ## [4.2.1] - 2020-09-22
 
 ### Changed

package.json

@@ -1,6 +1,6 @@
 {
   "name": "eth-json-rpc-filters",
-  "version": "4.2.1",
+  "version": "4.2.2",
   "description": "[json-rpc-engine](https://github.com/MetaMask/json-rpc-engine) middleware implementing ethereum filter methods. Backed by an [eth-block-tracker](https://github.com/MetaMask/eth-block-tracker) and web3 provider interface (`web3.currentProvider`).",
   "main": "index.js",
   "scripts": {