Motion Controller Board Firmware Release Notes

Rewrite junction/jerk algorithm. Optimized planning strategy for better acceleration control.
Added basic thermal protection function if the heating speed is lower than 1.8C/s, firmware will throw out an Error. (If running with modified cooling or different fans. heating speed may lower than 1.8C/s).
Implemented new USB communication protocol, shifted from single thread protocol to multi process safe protocol, improved USB latency.
Implemented basic fast pause/stop function.
Enlarged planning buffer size from 16 to 32, to improve performance under random USB communication delay while doing high speed printing with very short segments.

Add history tracking into thermal runaway function
Reimplemented thermal runaway function, added protection while changed by gcode
Temperature reporting during heating period fixed
Enlarged thermal runaway protection range to fix the thermal error on certain machines
Add extruder number while throwing out max or min temperature error to help identify the corresponding thermalcouple
Add compile option for single extruder. (uncomment #define DUAL to get dual head version.) In case to avoid the damaged second thermocouple on single head machine to generate an error
Modified M112 kill function to implement fast stop feature

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