Default keymap for grandiceps Keyboard

Features:

Symmetric modifiers (CMD/Super, Alt/Opt, Ctrl, Shift)
Various modes, can be switched (using Adjust layer)
Modes for Qwerty and Colemak support
Modes for Mac vs Linux/Win support -> different order of modifiers and different action shortcuts on the "UPPER" layer .
The OLED on master half shows selected mode and caps lock state and is rotated.