Improve the documentation

Implement tap-hold for alphabets and special characters (#15)

Added the demo image

Added instruction for keyboard diffuser.

Fix formatting in README for Precision Cursor Mode

Adjustment on the precision calcualtion

Implement issue #8 (#13)

Update README.md

Allow SELECT+TrackballClick to toggle between precision & normal cursor movement

Fix: Custom Backlight Driver to Resolve Flickering At Low Light

Added TPU shim for improving trackball stability

Clearout the Magic Value that Prevent the Bootloader continue loading the firmware (#11)

Added README: situation where the DFU mode cannot flash firmware

Handling EVQWJN007 mechanical errors (#7)

Fix cursor jumping when moving really fast (#6)