v1.0.2: updated light.py; introduced unique_ids and available status

Merged from djtimca: Updated to support lights with dimmable and colour_temp settings
Merged from postlund: Add support for unique_id and available

Please note: after installing this release, entities probably will need to be deleted from Configuration-Entities and let them be recreated.

v1.0.1

v.1.0.1: sending only dps actually used in request payload"

v1.0.0

First release with SET_POSITION feature for covers