Fix debug uart detection * The pullup capacitor is slow to charge up, force it

Print detected version during build

Merge pull request #48 from RoboticsBrno/sboot Support building and flashing via sboot

Auto-reset RBCX into DFU on sboot upload

Implement reboot to DFU via obscure tunnel CDC settings

Support building and flashing via sboot Updates #33

Merge pull request #47 from RoboticsBrno/usbdebug Implement debug uart via another USB endpoint

Implement debug uart via another USB endpoint

Merge pull request #46 from RoboticsBrno/fw_for_1.1 Update BSP for v1.1, add more debug commands

Update BSP for v1.1, add more debug commands Closes #43