* Switch Quefrency from flaky I2C back to serial
* Lower mouse wheel speed on Quefrency slightly
* Migrate common settings to userspace
* Enable Bootmagic Lite for consistent reset to bootloader.
* Turn off some undesired features across all keyboards.
* Remove EEPROM reset keybinding from all keyboards since Bootmagic Lite
also does an EEPROM reset.
* Set backlight and underglow increments consistently across all
keyboards since lots of them like to override the deafults.
* Set mouse keys consistently across all keyboards.
* Update function layer keymap images
* Set Quefrency bootloader correctly for Elite-C
* Update Quefrency layout to be more like HHKB
* Update KBD67 layout to be more like HHKB
* Add keymap for BDN9 macropad
