* add ability for saving / exporting custom themes
* make arrow keys on keyboard repeatable
* more cursor toolbar keys (page up/down(/start/end, word left/right)
* add paste key
* improve key swipe behavior
* add space swipe setting to toggle numpad
* add clipboard suggestion for recently copied text
* de-select text on pressing select keys again
* tune some colors in settings for Android 12+
* adjust language dependent popup keys
* minor fixes and improvements
