Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `app/services/remove_status_service.rb`:
  Conflict caused by us having a distinc Direct timeline.
  Ported upstream changes.
- `app/javascript/mastodon/features/compose/components/compose_form.js`:
  Conflict between glitch-soc's variable character limit and upstream
  refactoring that part of the code.
  Ported upstream changes.

lib/mastodon/version.rb

@@ -9,7 +9,7 @@ module Mastodon
     end
 
     def minor
-      2
+      3
     end
 
     def patch
@@ -17,7 +17,7 @@ module Mastodon
     end
 
     def flags
-      ''
+      'rc1'
     end
 
     def suffix