- ActivityPub: Deactivated user deletion
### Added
+- Expiring/ephemeral activites. All activities can have expires_at value set, which controls when they should be deleted automatically.
+- Mastodon API: in post_status, the expires_in parameter lets you set the number of seconds until an activity expires. It must be at least one hour.
+- Mastodon API: all status JSON responses contain a `pleroma.expires_at` item which states when an activity will expire. The value is only shown to the user who created the activity. To everyone else it's empty.
+- Configuration: `ActivityExpiration.enabled` controls whether expired activites will get deleted at the appropriate time. Enabled by default.
- Conversations: Add Pleroma-specific conversation endpoints and status posting extensions. Run the `bump_all_conversations` task again to create the necessary data.
- **Breaking:** MRF describe API, which adds support for exposing configuration information about MRF policies to NodeInfo.
Custom modules will need to be updated by adding, at the very least, `def describe, do: {:ok, %{}}` to the MRF policy modules.
- Configuration: Added `extra_cookie_attrs` for setting non-standard cookie attributes. Defaults to ["SameSite=Lax"] so that remote follows work.
- Timelines: Messages involving people you have blocked will be excluded from the timeline in all cases instead of just repeats.
- Admin API: Move the user related API to `api/pleroma/admin/users`
+- Admin API: `POST /api/pleroma/admin/users` will take list of users
- Pleroma API: Support for emoji tags in `/api/pleroma/emoji` resulting in a breaking API change
- Mastodon API: Support for `exclude_types`, `limit` and `min_id` in `/api/v1/notifications`
- Mastodon API: Add `languages` and `registrations` to `/api/v1/instance`