Programmers keyboard

May 23, 2021

Added:
- Sound when key pressed.
- Popup when key pressed.

Fixes:
- Cursor control with gestures did not work on some devices.
- On some devices, the keyboard change window did not open when the spacebar was pressed for a long time.
- On some devices, the settings window did not appear when the shift key was pressed for a long time.

- Minor optimizations and improvements.