KinT Blackpill Edition

This is a fork of Michael Stapelberg's KinT project (https://github.com/kinx-project/kint#using-socket-headers) with the following modifications:

• Replaced Teensy with STM32F411 Blackpill controller (blackpill directory)
• Reduced PCB size to 100 x 86 mm
• Use Vial firmware. Source code is in my fork of Vial