HA light entities not reflecting changes made by faceplate

[sftgunner]

Another thing I've noticed is the state of the lights isn't reflected in HA if I switch on from a faceplate.  The light shows off in HA even if on.

Originally posted by @Hansontech190 in #13 (comment)

To investigate further - putting in a separate issue so I don't forget

[sftgunner]

This might have been inadvertently solved by b18deb1 - feedback appreciated once v0.6.0 goes live.

I suspect the cause was that the state update section of the code was only reading channel information, rather than channel and address information (so if a state change on address 1, channel 1 occurred, both address 1 channel 1 and address 4 channel 1 (for instance) would change.