Mobile Touch Support

Had someone reach out saying they tried to open the web app on their mobile phone and couldn't play, so I added touch-drag support. Tap anywhere on the screen and drag in a direction to move that direction. Dragging downward and then upward doesn't seem to work, but it worked when testing the project, so I assume this is some weirdness to do with exporting to web. Dragging downward, not touching, and then dragging upward works fine, it's just when holding the drag and changing between up and down. Doesn't seem to happen for left to right. Very strange... Apologies!