* Show room member role changes in the timeline.
* Fix a bug in room flow coordinator.
* Tidy up roles and permissions flow.
* Refresh the power levels in the room details screen.
* Automatically update permissions after saving.
* Remove extra button.
* Add a short delay to the roles and permissions screen snapshots.
The permissions rows are now in a loading state initially.
* Only allow admins to see the roles and permissions screen.
* Hide the selection checkbox on Admins when changing roles.
* Show an empty state for banned users.
* Add separate actions for ban and remove.
* Implement reset permissions and demote self alerts.
* Add tests for resetting permissions and demoting self.
* Add a warning when promoting someone to administrator.