* G28 gcode now support the "B" flag that enable you to come back to the last position of the axis before the homing command. (Used for fix loose steps)
### Version 4.1.5
### Version 4.1.5
* Implemented FAST_PWM_FAN and FAN_SOFT_PWM also for other fan that can be added in configuration_adv file.
* Implemented FAST_PWM_FAN and FAN_SOFT_PWM also for other fan that can be added in configuration_adv file.
* Added the ability to set a min speed to the fan that can be added in configuration_adv file.
* Added the ability to set a min speed to the fan that can be added in configuration_adv file.