- Set all other ChibiOS defaults to 'off', when not targeting Proton-C
- Modified all existing F303 boards to point at the QMK_PROTON_C to ensure repeatable binary output
- Modified version.h generation so that SKIP_VERSION=yes generates the same output
* Add: RGB underglow support using SPI to SteamVan and CO60
* Update: Switch to QMK's baclight implementation for CO60 and SteamVan
* Fix: Remove now unnecessary backlighting code from keyboard files