2.2.0

• Fix remote friends plugin detection on public Friends page when headers are stripped (#160).
• Permissions: Allow using the friends plugin as an Editor (#121). An administrator account no longer required, you only need one to set the main user and adjust blog-level settings.
• Automatic status: Add option to disable creation of automatic status post drafts (#141).
• ActivityPub: Support for outgoing mentions (prepared in Automattic/wordpress-activitypub#213 by removing the parser from there for quicker iteration). Implemented in #137.
• ActivityPub: Use the avatar from ActivityPub (#142) and allow setting it after the fact (it won't change automatically).
• ActivityPub: Add outbox support (#163) which means that when you now subscribe to someone new, it will fetch old posts.