* Send correct receipts when viewing a room
* Fix strict type issues
* Handle promises
* Handle more primises
* Add generic array type
* Replace existende check with type predicate
* Fix wrong variable check
* Improve comment about initial read marker
* Use read_markers API for fully read receipts
* Log public receipt fallback
* Rename variables in new code to be aligned to the spec
* Add end-2-end test for read markers and receipts
