title: How to get the path element of hovered scatter point
body: <p>When I hover an scatter point in a scatter chart, the mouseOver callback receive a event object, but I cant find the current point nor clientX/clientY in that object.</p>
  
  <p>How can I get it?</p>
  
  <p>Im using version v2.3.5 of highcharts</p>
  
  <pre><code>chart = new Highcharts.Chart({
      [...]
      plotOptions: {
          scatter: {
              [...]
              events: {
                  click: function(ev) {
                      [...]
                      scatterClick(ev);
                  }, 
                  mouseOver: function(ev) {
                      [...]
                      scatterHover(ev);
                  },
  </code></pre>