* Xiaomi MiIO Sensor: Xiaomi Air Quality Monitor (PM2.5) integration.
* Missing newline added.
* Use a unique data key per domain.
* turn_{on,off} service moved to __init__.py.
* All sensors group added.
* Sensor is a ToggleEntity now.
* is_on property added.
* Use Async / await syntax.
* Make hound happy.
* Unique id added.
* Turn on/off service removed from abstract sensor.
* Turn on/off methods removed.
Device unavailable handling improved.
* Unused import removed.
* Sensor migrated back to an entity.
* Rebased and requirements updated.
