* [tado] fix issue #12160 (first attempt)
* [tado] code style
* [tado] option descriptors
* [tado] add level5
* [tado] fan level and swing not allowed on heating or hot water
* [tado] warn about possible un-supported state values
* [tado] minor formatting
* [tado] harmonise getter methods for fan and swing state
* [tado] include all options in xml
* [tado] remove 's' from capabilities list names (go figure..)
* [tado] add OFF option
* [tado] add support for light channel, and dynamic channel decriptions
* [tado] tweak ReadMe for more clarity
* [tado] adopt reviewer suggestions
Signed-off-by: Andrew Fiddian-Green <software@whitebear.ch>
