Releasing version 2.22.0

Author: LaunchDarklyCI

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 All notable changes to the LaunchDarkly Client-side SDK for React will be documented in this file. For the source code for versions 2.13.0 and earlier, see the corresponding tags in the [js-client-sdk](https://github.com/launchdarkly/js-client-sdk) repository; this code was previously in a monorepo package there. See also the [JavaScript SDK changelog](https://github.com/launchdarkly/js-client-sdk/blob/master/CHANGELOG.md), since the React SDK inherits all of the underlying functionality of the JavaScript SDK; this file covers only changes that are specific to the React interface. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [2.22.0] - 2021-01-27
+### Added:
+- Added the `alias` method to `LDClient`. This method can be used to associate two user objects for analytics purposes. When invoked, this method will queue a new alias event to be sent to LaunchDarkly.
+- Added the `autoAliasingOptOut` configuration option. This can be used to control the new automatic aliasing behavior of the `identify` method; by passing `autoAliasingOptOut: true`, `identify` will not automatically generate alias events.
+
+### Changed:
+- `LDClient`'s `identify` method will now automatically generate an alias event when switching from an anonymous to a known user. This event associates the two users for analytics purposes as they most likely represent a single person.
+
 ## [2.21.0] - 2020-11-17
 ### Fixed:
 - The `camelCaseKeys` utility function is now exported as a function instead of as an object containing a `camelCaseKeys` function. `camelCaseKeys.camelCaseKeys` remains for backwards compatibility.