Fixed zero velocity swipe

First met this issue on the **Xperia M** device (Android 4.1.2). Sometimes *'swipe'* event didn't occur. This happens because Xperia M is dispatched *'touchmove'* event so fast that on the slightest moving of finger 3 *'touchmove's* occurs with the same coordinates.
So, I think we should store the **lastMove** coordinates only when the last *'touchmove'* coordinates has at least **1px** delta from the **preLastMove** coordinates.