title: Highcharts leave selected like on selection
body: <p>I want to make custom selection, on select I want to leave the selection layer pointed in image: 
  <a href="https://i.stack.imgur.com/TJBuG.png" rel="nofollow"><img src="https://i.stack.imgur.com/TJBuG.png" alt="enter image description here"></a></p>
  
  <pre><code>chart: {
              events: {
                  selection: function (event) {
                     event.preventDefault();
                     event.xAxis[0].axis.chart.series[0].points.forEach(function (point) {
                               point.select(true, true);
                     })
                  }
              },
              zoomType: 'x'
          },
  </code></pre>
  
  <p>Example is <a href="http://jsfiddle.net/L8nbapeu/" rel="nofollow">here</a>, but I just selected the points.</p>