Added quirks from newer android version like Sticky Immersive Mode on Android API 19 (4.4 KitKat) and Softkey Back Prevention on Android API 3 (1.5 Cupcake)
Added 1.5kB on overall APK size
Softkey devices can use Home / Recent button to exit (like how competitor's software do 😏)
Planning on Android API 29 (9.0 Pie) Fill Under Notch (which is usually black)