Fixes from Tranquilite@GH.
- Fix keyboard_task() when matrix column size > 16
- Add clear_keyboard() in NKRO command to avoid stucking keys.
- Fix function name in print.c.
Add initial files for Phantom from Tranquilite@GH.
Fix Sony NEWS pinouts in comment
Fix Sony NEWS connector pinout and keymap.
Fix and keymap of hid_liber from alaricljs at geekhack.org.
Disable JTAG function for hid_liber to use PORTF.
Fix copyright and license notices.
Add comments on keymap.c.
Add initial files for hid_libre.
Fix image link in README.md
Add print_dec() and debug_dec().