* Add support for light effects
* Move PLATFORM_SCHEMA changes in light to mqtt_template
* Add effect validation
* Add unittests
* Add light effect to demo and unittests
* Use cv.string for config validation
* Use cv.ensure_list for config validation
* Fix typo
* Remove unused exception management for effect
* Update __init__.py
addedattribute "WHITE_VALUE" to improve support for RGBW devices
* Update services.yaml
* Update __init__.py
* Update __init__.py
* Update __init__.py
* Update __init__.py
* Update __init__.py
* Update __init__.py
shortened line
* Update __init__.py
* Update __init__.py
* Add mysensors RGBW and light tests
* Activate support for mysensors RGBW devices with support for
white_value attribute.
* Add white_value support in light demo platform.
* Add tests for white_value and more for light component.
* Add tests for light demo platform.
* Fix import order in check_config.