Make alarm easier to dismiss like android's clock

From Anonymous on 2015/12/12 00:43:06 +0000

Alarm is not easy to dismiss as android because android just swipe and dis
miss

Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/11058756-make-alarm-easier-to-dismiss-like-android-s-clock