* fixed median was based on 1.5 minute interval, not 1 hour
* ignore median and set state from first value, when previous state was None
* update before add, removed unused 'retries' and 'ble_timeout', check if platform ready
* added missing blank line
* fixed too long line
* using modern python 3.5 features, changed comment to be less verbose
* continuation line fix
* removed DEFAULT_SCAN_INTERVAL in favor of existing SCAN_INTERVAL
* added unavailability tracker, updated sensor component
* change hass argument position according to position in binary_sensor
* added hass argument to binary_sensor, updated is_on(), it can be UNAVAILABLE now
* updated switch component to support unavailability feature
* updated light component to support unavailability feature
* updated cover component to support unavailability feature
* set _hass property
* added unavailability tracker, updated sensor component
* change hass argument position according to position in binary_sensor
* added hass argument to binary_sensor, updated is_on(), it can be UNAVAILABLE now
* updated switch component to support unavailability feature
* updated light component to support unavailability feature
* updated cover component to support unavailability feature
* set _hass property
* fixed error with wrong arguments number during callback call
* reset unavailability state on new message received from device
* use locks to fix race condition during managing _state property
* overriden state() method for some components to check for STATE_UNAVAILABLE and return it instead e.g. STATE_OFF
* fixed linter
* removed blank line
* use available() method instead of changing _state
* filter motion sensors 'heartbeat', was removed from PyXiaomiGateway
* remove self._hass, use self.hass set by HA on attach
* self.push_data now running in the event loop, use async_schedule_update_ha_state()
* merge fix
* removed accidentally added home-assistant-polymer
* bump PyXiaomiGateway version to 0.8.0
* bump PyXiaomiGateway to 0.8.0
* updated methods names and annotations
Paul Annekov