* More keymap fixes. F-row on bottom layer wasn't fully setup, also switched raise/lower keys to use tap-toggle.
* Added PrScr, put Tab back on top layer.
* Fixed build breakage with default keymap (unneeded rgblight.h include)
* Adds support for multiple layouts. Adds custom keymap for "offset"
layout.
* Adds a tool to help detach the keyboard from the Linux HID driver before programming.
* Adds a tool to help detach the keyboard from the Linux HID driver before programming.