* 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.
* include variables and .h files as pp directives
* start layout compilation
* split ergodoxes up
* don't compile all layouts for everything
* might seg fault
* reset layouts variable
* actually reset layouts
* include rules.mk instead
* remove includes from rules.mk
* update variable setting
* load visualizer from path
* adds some more examples
* adds more layouts
* more boards added
* more boards added
* adds documentation for layouts
* use lowercase names for LAYOUT_
* add layout.json files for each layout
* add community folder, default keymaps for layouts
* touch-up default layouts
* touch-up layouts, some keyboard rules.mk
* update documentation for layouts
* fix up serial/i2c switches
Joe Wasson