* Move S_LIGHT and V_LIGHT from light back to switch platform, to avoid
double devices showing.
* Remove MySensorsLightPlain class from light platform, since it's not
needed anymore.
* A light switch with only a switch, ie no dimmer or
RGB controls, will show as a regular switch device.
* Add mysensors binary sensor.
* Add discovery platforms to binary_sensor base component.
* Replace device_state_attributes with state_attributes in
binary_sensor base class.
* Fix docstrings.
* Add discovery of binary sensor to mysensors component.
* Add child.type as argument to mysensors device_class.
* Move binary sensor types from sensor to binary_sensor module.
* Fix binary_sensor attribute tests. Use state_attributes instead of
device_state_attributes.
* Add check if V_LIGHT is in values before sending message in
_turn_on_light.
* Replace super calls with self.
* Remove not needed init method in child classes.
* Remove turn_on method in parent class and add update_ha_state
to _turn_on_light, _turn_on_dimmer and _turn_on_rgb_or_w.
* Make a flatter one level inheritance, with MySensorsLight as parent
with four children, one per light type.
* Break out helper methods. One per plain light, dimmer and RGB/RGBW
children and per update, turn_on and turn_off, nine in total. Put
these in the parent.
* Call the helper methods as needed from the child methods update,
turn_on and turn_off.
* Change name of MySensorsLightLight to MySensorsLightPlain.
* Fix module docstrings according to pep257.
* Change name of color util method from rgb_hex_to_list to
rgb_hex_to_rgb_list.
* Add unit tests for rgb_hex_to_rgb_list.
* Add a light entity class per V_LIGHT, V_DIMMER, V_RGB and V_RGBW.
Make these classes inherit each other up to MySensorsLight class.
* Map the entity classes to their S_TYPE in a dict.
* Check if an entity class map or just an entity class have been passed
to pf_callback_factory before using the entity_class variable in
homeassistant/components/mysensors.py.
* Add rgb_hex_to_list function in homeassistant/util/color.py.
* Make light controllable independently with types V_LIGHT, V_DIMMER,
V_RGB and V_RGBW. V_RGBW is not implemented in the frontend yet.
* Add discovery for light platform.
* Add optimistic mode config setting for switch and light
to allow feedback state from actuator.
* Move S_LIGHT, V_LIGHT, V_STATUS types from switch to light platform.
* Change node update logging to debug from info level.
* Fix some inaccurate comments.
Paulus Schoutsen
MartinHjelmare