* start implementing remote emoji fetcher
* update status where pk
* aaa
* tidy up a little
* check size limits for emojis
* thank you linter, i love you <3
* update swagger docs
* add emoji dereference test
* make emoji max sizes configurable
* normalize db.ErrAlreadyExists
* migrate emojis
* add get emoji to s2s (federation) API
* add new emoji db + cache functions
* add shortcodeDomain lookup for emojis
* check existing emojis w/cache, not w/constraints
* go fmt
* add putEmoji func
* use new db emoji funcs instead of where
* remove emojistringstotags func
* add unique constraint back in
* fix up broken migration
* update index
* implement custom_emojis api endpoint
* add tests for getting custom emoji out of the database and converting to api emoji
* change sort direction of emoji query
* change logging level and initialize array with known length as per kim's suggestions
* add continue to lessen risk of making a malformed struct during conversion from db to api emojis
