Quick Clock

Jan 22, 2019

* Support Nougat, Oreo and Pie
* Add clock controller to allow external control through intent
- start clock: Intent { act=org.uguess.android.clock.action.START cmp=org.uguess.android.clock/.ClockController }
- stop clock: Intent { act=org.uguess.android.clock.action.STOP cmp=org.uguess.android.clock/.ClockController }