Great This is all I was looking for.
Optimized memory consumption when no hotkey launching is used.
Minimal permissions: no in-app payments. Still needs some special permissions for launcher view.
Added vibration effect when hotkey launcher is started
Works now properly with Google Camera app
Works now better in Android 5.0+ devices. Also overlays are again working.
Pocket launch fix: uses proximity sensor to prevent unwanted launches.
Improved camera start animation.
Fixed performance problem in old android devices.