* commit '1807db5e7':
changelog
Remove unused get_latest_event_ids_and_hashes_in_room
Remove unused get_prev_events_and_hashes_for_room
Remove unused hashes and depths from _update_membership params
Remove unused hashes and depths from create_event params
Remove unused hashes and depths from create_new_client_event params
replace get_prev_events_and_hashes_for_room with get_prev_events_for_room in create_new_client_event
rename get_prev_events_for_room to get_prev_events_and_hashes_for_room