* Enable 4x4 and 5x5 community keymap support
* Pull 4x4 community keymap fixes from @noroadsleft
* Build fixes for guidoism keymap - move keymap to layouts/community/planck_mit as it uses the LAYOUT_planck_mit macro
* Matrix/keymap refactor
White space and readability updates
* Configurator support
Added info.json file.
* Readme update
Markdown formatting
* Add support for ortho_4x12 keymaps
* Added planck_mit layout support
* Disable SWAP_HANDS_ENABLE for zlant:wanleg keymap
* Disable BACKLIGHT_ENABLE for zlant:bakingpy keymap
* Account for backlight enabled flag when passing backlight level to slave
* Add BL_TOGG to keymap for testing
* Apply backlight fix to Iris
* Port I2C LED backlight control from Iris to Levinson
Danny