YD button and update paths to MCP widgets.
Address memory leaks found with valgrind and some C++ compat. fixes.
Add clang++ to Makefile.
Fix path to rudder pedals.
Fix rotary-encoders to not use bool Grey-code props, but integer values.
Config update.
Use std::thread::hardware_concurrency().
Refactor CHR-UM6 API to separate class.
Resource: make method naming more in line with std::.
Add --copyright option.
Small docs fixes.
Add Watchdog.
Don't release(), reset()! Fix memory leaks.
Remove any configurations from here.

They'll be available under another repository at
<https://github.com/mcvsama/xefis-configs>