PREVENT_STUCK_MODIFIERS
* Remove chording as it is not documented, not used, and needs work. * Make Leader Key an optional feature. * Switch from `PREVENT_STUCK_MODIFIERS` to `STRICT_LAYER_RELEASE` * Remove `#define PREVENT_STUCK_MODIFIERS` from keymaps.
* adding all ErgoTravel Files * fixing KC_KEYMAP to LAYOUT_kc on Viet's keymap.c