* Add own personal Contra layout
* Enable auto-shifting
* Enable tap dancing and implement Space Cadet-like shift with LSHIFT and ENTER
* Implement Colemak Mod-DH layout, clean up Adjust layer
* Implement keyboard and keymap refactor
More info: https://github.com/qmk/qmk_firmware/pull/3191
* Update the readme.md and keymap.c files for Colemak
* Add include guard, make layout description cleaner
