Trigger alarm early when ideal sleep duration met

From Tom on 2016/12/05 03:58:54 +0000

I’d like to wake up early automatically if I get to sleep early (assuming I don’t pause sleep for long enough to end up with a deficit at the normal alarm time).

Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/17330287-trigger-alarm-early-when-ideal-sleep-duration-met