Fix caching headers when last_modified_at is nil
Return 422 in Following Discover when no params passed
Fix unfollow response
Raise NotificationError on notification failure
Fix previous commit
Fix cache header expiry
Memoize methods in cache control
Update caching headers spec and fix memoization
Fix: Caching headers are always returned
Fix previous commit
Fix caching headers response
Remove debug
Fix caching headers spec
Fix extract params when charset is included in content type header
Allow mentioned_post and mentioned_entity params not in conjunction with
each other
Add GET /posts/:entity/:post_id and fix issue where wrong post for
public id could be returned if multiple records exist for it with
different entities
Fix: specify post_id_entity, since_id_entity, and before_id_entity in
conjunction with post_id, since_id, and before_id to specify which
entity each pertains to
Switch to ETags for caching
Remove unused conditional in CorsHeaders
Add ETag check middleware