watch faces that handle EVENT_LIGHT_BUTTON_UP but not EVENT_LIGHT_BUTTON_DOWN
probably don't want the default EVENT_LIGHT_BUTTON_DOWN LED activation behavior
* minor enhancements for the countdown face
* Changed usage of countdown timer.
- Long button presses have been removed.
- The light button is used to restore the last countdown as well as enter setting mode when pressed again.
- The visual state has been removed from the display.
- The internal states have been renamed to reflect the new logic.
* restore time when countdown finished.
* support for fast forward on long press (untested).
* support for beeps similar to stop watch
* fixed bug wiht display when fast forwarding
If you moved away and back to these faces, you'd lose the indicator. Not that the indicator here
seems very valuable, since it's not displayed on simple_clock_face, but at least
this makes things more consistent.
* Make countdown face reset to 0
It was annoying to have countdowns less than DEFAULT_MINUTES.
Admittedly, this does make DEFAULT_MINUTES fairly useless, since
we only ever see it the first time...
* Undo accidental change to movement_config.h
