PickupDeviceListener.onDevicePutDown() is never called

[FormallyMyles]

Do you want to request a feature or report a bug?
Bug Report

What is the current behaviour?
The PickupDeviceListener.onDevicePutDown() method is never called so any code using it is never triggered.

If the current behaviour is a bug, please provide the steps to reproduce.
Put down the phone, the event is not called (if you put System.out.println() statements)

What is the expected behavior?
The method should be called when the phone is placed down (I'm not entirely sure on the exact parameters to detect this).

Relevant Code

Interface:

sensey/sensey/src/main/java/com/github/nisrulz/sensey/PickupDeviceDetector.java

Line 29 in 70bd5e8

void onDevicePutDown();

Should be called somewhere around here:

sensey/sensey/src/main/java/com/github/nisrulz/sensey/PickupDeviceDetector.java

Lines 40 to 49 in 70bd5e8

	protected void onSensorEvent(SensorEvent sensorEvent) {
	float x = sensorEvent.values[0];
	float y = sensorEvent.values[1];
	float z = sensorEvent.values[2];
	double vectorSum = Math.sqrt(x * x + y * y + z * z);
	if (vectorSum > 11) {
	pickupDeviceListener.onDevicePickedUp();
	}
	}