* Remove QUANTUM_DIR code blocks from keyboard rules
This commit removes the deprecated "QUANTUM_DIR" code block from
rules.mk files that affect entire keyboards.
* remove QUANTUM_DIR code blocks from rules for default keymaps
This commit removes the deprecated "QUANTUM_DIR" code block from
rules.mk files that affect default keymaps.
* remove QUANTUM_DIR code blocks from rules for user keymaps
This commit removes the deprecated "QUANTUM_DIR" code block from
rules.mk files that affect "user" keymaps. (It's actually any keymap
that isn't named `default`.)
* remove QUANTUM_DIR code blocks from rules for community layouts
This commit removes the deprecated "QUANTUM_DIR" code block from
rules.mk files for community layouts.
* remove QUANTUM_DIR code blocks from rules for userspaces
This commit removes the deprecated "QUANTUM_DIR" code block from
rules.mk files for userspaces.
* 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.
