Open
Description
- support applying edits in RelationWriter
- support local echo for edits as PendingEvent
- support showing edit history
- get all edits
- show diff
- add UI (right panel in details view for a given message)
- support sending edits
- extract composer to view that takes messagebody to prefill contents (for current textarea impl that would just stringify a lot and lose all markup upon editing)
- ensure that edits of context entries update their containing event in the timeline (e.g. a reply preview that was edited should update in the timeline)