- Fixed transitioning from the off to on state. Thanks to @marcel1988 for informing
  me about his non-functional wake-up light script. Before this fix, the light would
  stay off during the full transformation, only to turn on at the very end.
- The `on_brightness` trigger is now also called at the start of a transition.
  This fixes a problem with the brightness slider illumination not following along
  when you slide your finger over it.
- Suppressing a transition time for transitioning to a night light color is now
  only instant when starting from a night light setting. Before this change, moving
  from for example 80% brightness to 1% brightness (i.e. night light), would be
  instant. Now an actual transformation is done.