* Require device id when registering timer handlers
* Require device id for timer intents
* Raise errors for unregistered device ids
* Add callback
* Add types for callback to __all__
* Clean up
* More clean up
* First pass at timers
* Move to separate file
* Refactor to using events
* Add pause/unpause/status
* Add ordinal
* Add test for timed Assist command
* Fix name matching
* Fix IntentHandleError
* Fix again
* Refactor to callbacks
* is_paused -> is_active
* Rename "set timer" to "start timer"
* Move tasks to timer manager
* More fixes
* Remove assist command
* Remove cancel by ordinal
* More tests
* Remove async on callbacks
* Export async_register_timer_handler
Paulus Schoutsen
Michael Hansen