removed constraint in movepercent

allows moving over 100% and 0%, useful if no hard limit but move needs
to be limited in steps

Atm_AccelStepper.cpp

@@ -484,7 +484,7 @@ Atm_AccelStepper& Atm_AccelStepper::moveTo( long int stepAbs) {
 }
 
 Atm_AccelStepper& Atm_AccelStepper::movePercent( float percent) {
-  constrain(percent, -1., 1.);
+  
   _targetStep   = _currentStep + percent*_maxStep;
   runMode = 0;
   // _isHoming = 0;
@@ -496,7 +496,7 @@ Atm_AccelStepper& Atm_AccelStepper::movePercent( float percent) {
 }
 
 Atm_AccelStepper& Atm_AccelStepper::moveToPercent( float percent) {
-  constrain(percent, 0., 1.);
+
   _targetStep   = percent*_maxStep;
   // _isHoming = 0 ;
   runMode = 0;

Atm_AccelStepper.h

@@ -42,6 +42,7 @@ class Atm_AccelStepper: public Machine {
 
   AccelStepper *stepper;
 
+  long int _maxStep = 0; //0 is undefined, can be set using setMaxstep or homingHigh
   long int homing_speed = 1000;
   bool homingLow_done = 0 ;
   bool homingHigh_done = 0 ;
@@ -72,6 +73,8 @@ class Atm_AccelStepper: public Machine {
   Atm_AccelStepper& pinReversed( bool directionInvert=false,  bool stepInvert=false, bool enableInvert=false );
   bool enabled ;
 
+
+
   //limits public methods and variables
   Atm_AccelStepper& limitLow_set(int mode = 0, int pin = -1, int reversed=0);
   Atm_AccelStepper& limitLow_isHard(bool hardlimit = 1);
@@ -114,7 +117,7 @@ class Atm_AccelStepper: public Machine {
   //positionning private variables
   long int _currentStep = 0;
   long int _targetStep = 0;
-  long int _maxStep = 0; //0 is undefined, can be set using setMaxstep or homingHigh
+
   long int _currentSpeed;
   atm_timer_millis position_timer ;
   int POSITION_SEND_TIMER = 50 ;