Only one behavior change in the scan loop of zstumbler.rb to, when doing a scan across all the channels, keep it from retrying channel 11 again one last time just before it exits.
Adds detection for ELM327 chips reporting CAN ERROR when vehicle is off.
Addes some enhanced UDS Error codes.
Cleaned up reporting from getvinfo if the vehicle is off or not connected.
Array2Hex in the automotive extension how supports passing an array or integers or string hexes
Added some extra error handling for UDS calls to non-supported pids