v 2.7.5

• Fixed an issue where the M5 would restart when the serial port was initialized for the first time.
• New method: get_tool_reference,set_tool_reference,set_world_reference,get_world_reference,set_reference_frame,get_reference_frame,set_movement_type,get_movement_type,set_end_type,get_end_type,get_plan_speed,get_plan_acceleration,set_plan_speed,set_plan_acceleration,get_servo_speeds,get_servo_currents,get_servo_voltages,get_servo_status,get_servo_temps.