- Non-admin users now cannot register `admin` scope tokens (not security-critical, they didn't work before, but you _could_ create them)
- Admin scopes will be dropped on create
- Rich media will now backoff for 20 minutes after a failure
+- Quote posts are now considered as part of the same thread as the post they are quoting
- Simplified HTTP signature processing
- Rich media will now hard-exit after 5 seconds, to prevent timeline hangs