Scrolling past the edges continues increasing the offset without moving image.

[ChristianTucker]

If you continue to scroll outside of the crop area, the image stays where it should, but the offset increases. Give it 4-5 solid "scroll" motions after it's hit the border, and it takes several the oposing way.

Example: Keep moving your image down after it hits the bottom, then try to move it up. It won't move it up until you move it enough to offset the offset.

Question: Can you zoom out of an image instead of in? That'd be a neat feature.

[st0ffern]

Feel free to create a PR, i dont quite have the time to look into this atm.