dist/scripts/vendor.min.js
function scroll (event) {
    if (!ctrl.shouldPaginate) return;
    event.preventDefault();
    ctrl.offsetLeft = fixOffset(ctrl.offsetLeft - event.wheelDelta);
  }
function scroll (event) {
    if (!ctrl.shouldPaginate) return;
    event.preventDefault();
    ctrl.offsetLeft = fixOffset(ctrl.offsetLeft - event.wheelDelta);
  }
When pagination is on, this makes sure the selected index is in view.
@param event