Update picozero.py

inherit from DigitalInputDevice - makes more semantic sense than Button

Author: pjbRPF

picozero/picozero.py

@@ -2027,6 +2027,7 @@ def __init__(self, pin, pull_up=False, bounce_time=1.00):
 MotionSensor.when_motion = MotionSensor.when_activated
 MotionSensor.when_no_motion = MotionSensor.when_deactivated
 
+
 class TouchSensor(Button):
     """
     Represents a capacitive touch sensor (e.g. TTP223)