[linux_prop_simu] Fixes PID library whean reaching I_max
* Uses now signed integers everywhere
[linux_prop_simu] Fixes data type (millis() returns unsigned int)
[linux_prop_simu] Clamps setpoint like the real hardware
[linux_prop_simu] Fixes rare bug occuring when errL==errR > AMAX
[linux_prop_simu] Reduces speed when there is a high compensation term
* Reduces circle-follow gain
[main_ia] Minor fixes, typo
[main_ia/A*] Fixes rare A* problems