There's an issue with the presence of returns with serde_json.
They can be serialized from borrowed strings, but they cannot
be deserialized into borrowed strings. I haven't looked into
why, but it's easy to just Own Things ™️
Also:
- Fix self-federating for comment create & update (this will
likely need to be fixed for reacts when I get around to
that)
- Expose API to retrieve replies for a given comment
- Expose Comment Create & Update actions