Update VESC firmware

[ottopasuuna]

There is a new version of the VESC firmware, and some of the commands have changed. It's not necessary, but there have been issues filed for the upstream PyVESC library about it, so it would be good to get our stuff up to date and reduce the need for legacy code.

[ottopasuuna]

I'm going to move this to after CIRC, as it looks like there may be a bit more involved than I had assumed. The BLDC tool has also changed quite a bit (ie completely rewritten).