Moving columns on iPad does not work (e.pageX, e.pageY are not defined)

When you try to move a column on iPad (try Column Moving demo in Tutorial) it just does not work. The problem is that e.pageX, e.pageY are not defined in 'touch...' events. You have to instead use this code:

var pointerEventToXY = function(e){
        var out = {
          x: 0, 
          y: 0
        };

        if (e.type == 'touchstart' || e.type == 'touchmove' || e.type == 'touchend' || e.type == 'touchcancel'){
            var touch = e.originalEvent.touches[0] || e.originalEvent.changedTouches[0];
            out.x = touch.pageX;
            out.y = touch.pageY;
        } 
        else if (e.type == 'mousedown' || e.type == 'mouseup' || e.type == 'mousemove' || e.type == 'mouseover'|| e.type == 'mouseout' || e.type == 'mouseenter' || e.type == 'mouseleave') {
            out.x = e.pageX;
            out.y = e.pageY;
        }

        return out;
    };

And you call it like this:

    var pageXY = pointerEventToXY(e);
    var pageX = pageXY.x;
    var pageY = pageXY.y;

I would recommend looking for all instances of e.pageX and e.pageY (I found 5 in current version) and replace them with the code above.