Modified configuration to use keywords instead of single letters.
Attempts to implement serial debug.
Attempt to create filesystem locking.
Various mods to shell including breaking out functions better to (later) support RTOS, I hope.
Added fault handlers to flash leds and print error to stdout
Minor mods to main and updater to attempt to reduce ram usage.
Merge branch 'master' of https://github.com/shimniok/diyrovers
Various minor mods