+- New HTTP adapter [gun](https://github.com/ninenines/gun). Gun adapter requires minimum OTP version of 22.2 otherwise Pleroma won’t start. For hackney OTP update is not required.
+- Add an option `authorized_fetch_mode` to require HTTP signatures for AP fetches.
+- ActivityPub: support for `replies` collection (output for outgoing federation & fetching on incoming federation).
+- Mix task to refresh counter cache (`mix pleroma.refresh_counter_cache`)