1.12.2:
+ Flashlight enabling via button (Android 6.0+)
+ Brightness change
+ Block screen orientation
+ End call function (Root required)

Earlier:
+ No more ads
+ No more INTERNET permission
+ Emulate a headset button on devices and answer calls via a key press (Root required)
+ Ability to detect a key by pressing on it instead of manual search through the list
+ Ability to enable a Toggle notification to quick enable/disable the app (+ stay unkilled for battery optimization services)