* 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.
* Implement magic 8-ball mode for big series switch
* LED Testing
* Add Ctrl+Alt+Del key mapping
* Add Windows lock (win+L) layout.
* Add Big Series 3-key
* Add Big Series 4-key
* Add Big Series 2-key
* Fix layout mapping for Big Series 3u
* Fix merge-conflict.
* Refactor bigseries boards into a single folder
