* Spec MSC3440: Threading (just the base)
Other threading MSCs to follow
* Spec MSC3856: Threads list API
* Spec MSC3715: Add`dir` to `/relations`
* changelog
* Apply suggestions from code review
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
* Update changelogs/client_server/newsfragments/1254.feature
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
