* Black-ify code

* Bump pykuna to 0.5.0

Change to new version of pykuna which will now be async.

* Convert component and platforms to async

* Fire event with recording data

Add new method to Kuna account class to fire a HASS event on HASS start and every recording_interval seconds; method queries the Kuna API for available recordings for each camera for the past recording_interval seconds, then fires an event for each retrieved recording with recording data for consumption by other HASS services (e.g. notify, downloader).

* Remove ffmpeg dependency from camera.py

Not needed.

* Update README.md