Wake up lights don't cancel easily

[smkelly]

Now that the wake up lights are a sequence of staged l right.turn_on, it is hard to cancel the sequence if you want to sleep in.

If you tell an Echo to "turn off the lights," it will turn off all of the lights at that minute. But the sequence is not terminated so you'll get more light when the next light in the sequence is turned on.

Need to make it so turning any light off in the group also cancels the entire sequence. But only when the sequence is running.

[smkelly]

This has been resolved.