Update changelog

CHANGELOG.md

@@ -3,6 +3,31 @@ Changelog
 
 All notable changes to this project will be documented in this file.
 
+# [4.0.3] - UNRELEASED
+
+### Added
+
+- Add redirection from paths with url-encoded `@` to their decoded form ([thijskh](https://github.com/mastodon/mastodon/pull/23593))
+- Add `lang` attribute to native language names in language picker in Web UI ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23749))
+- Add headers to outgoing mails to avoid auto-replies ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23597))
+
+### Fixed
+
+- Fix “Remove all followers from the selected domains” being more destructive than it claims ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23805))
+- Fix case-sensitive check for previously used hashtags in hashtag autocompletion ([deanveloper](https://github.com/mastodon/mastodon/pull/23526))
+- Fix sidebar behavior in settings/admin UI on mobile ([wxt2005](https://github.com/mastodon/mastodon/pull/23764))
+- Fix inefficiency when searching accounts per username in admin interface ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23801))
+- Fix server error when failing to follow back followers from `/relationships` ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23787))
+- Fix server error when attempting to display the edit history of a trendable post in the admin interface ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23574))
+- Fix original account being unfollowed on migration before the follow request to the new account could be sent ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/21957))
+- Fix pgBouncer resetting application name on every transaction ([Gargron](https://github.com/mastodon/mastodon/pull/23958))
+- Fix unconfirmed accounts being counted as active users ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23803))
+- Fix `/api/v1/streaming` sub-paths not being redirected ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/23988))
+- Fix drag'n'drop upload area text that spans multiple lines not being centered ([vintprox](https://github.com/mastodon/mastodon/pull/24029))
+- Fix sidekiq jobs not triggering Elasticsearch index updates ([ClearlyClaire](https://github.com/mastodon/mastodon/pull/24046))
+- Fix tags being stripped from plain-text short site description ([c960657](https://github.com/mastodon/mastodon/pull/23975))
+- Fix HTML entities not being un-escaped in extracted plain-text from remote posts ([c960657](https://github.com/mastodon/mastodon/pull/24019))
+
 ## [4.0.2] - 2022-11-15
 ### Fixed