regfine python client
fix uart fast recv bug by increasing buffer size
Fix Silly bug that forget to reset Exist struct at CheckExist, cause verything exist
change example size
add incramental SpindleSpeed Ctl
Let UpdateSpindle Speed accept 0 to stop Spindle
enable user to input filename by typing '-f filename' argv
implement Stepper Enable Ctl
Add back Macros for En Ctl
Add Limit Switch Code
Add c4 Example
Add PCB.nc example
Swap X-Y Axis
Fix job Mode UI reversed movement
Fix bug the Y is mirroring
Add MakerBot NC File and Second PCB Example
merge NewUI