* Use correct entity name
* We support server-side filters now
* Document filter v1 methods that can throw a 409
* Validate v1 filter phrase as filter title
* Always check v1 filter API status codes in tests
* Document keyword minimum requirement on filter API v1
* Make it possible to specify filter keyword update columns per filter keyword
* Implement v2 filter API
* Fix lint and tests
* Update Swagger spec
* Fix filter update test
* Update Swagger spec *correctly*
* Update actual files Swagger spec was generated from
* Remove keywords_attributes and statuses_attributes
* Add test for serialization of empty filter
* More helpful messages when object is owned by wrong account
A note on when we should set data structures linked to objects in the database to use the
bun nullzero tag -- this should only be done if the member type is a pointer, or if the
this primitive type is literally invalid with an empty value (e.g. media IDs which when
empty signifies a null database value, compared to say an account note which when empty
could mean either an empty note OR null database value).
Obviously it is a little more complex than this in practice, but keep it in mind!