Changes since rc.5:

- Allow the instance to be followed from Mastodon (through relays)
- Make sure activity recipient can't be nil
- Make sure users can't create profiles or groups with non-valid patterns
- Add description field to address representation
- Make sure prompt show the correct message and not just "Continue?" in mix mode
- Add a CLI command to delete actors
- Make sure activity notification recaps can't be sent multiple times
- Fix group notification of new event being sent multiple times
- Fix links to group page in group membership emails and participation
- Fix clicking on map crashing the app
- Remove unused fragment from FETCH_PERSON GraphQL query
This tag has no release notes.