* update for LTO and guard RGBLED_SPLIT
* Revert "update for LTO and guard RGBLED_SPLIT"
This reverts commit ce81177cbe330ae3e1e14c264dc0cb0946f08d70.
* Revert "Revert "update for LTO and guard RGBLED_SPLIT""
This reverts commit 67da0ce9f38777064ad094c1ecba7ce17a40994f.
* update iris keymap for keymap_kc removal and overhaul userspace
* add licenses
* fix tap_dance error when rgblight is disabled and update/clean iris/sinc maps
Seth Barberee