* refactor keyboards using ST_STM32F072B_DISCOVERY to use 'MCU = STM32F072' * refactor keyboards using GENERIC_STM32_F042X6 to use 'MCU = STM32F042' * refactor keyboards using GENERIC_STM32_F103 to use 'MCU = STM32F103'
* Initial firmware for Retro75 * Update readme to match new template guidelines