TODO

   1
   2   o convert firmware.sh to C
   3   o get rid of "scan all devices to find myself" libusb interface
   4       if it can not be fixed, drop libusb entirely and add a simple
   5       wrapper around the Linux usb ioctls we need
   6   o drop all support for the DEPRECATED sysfs layout
   7   o remove deprecated BUS=, SYSFS{}=, ID= keys