title: Highlight a specific line series data point in multiple line series of Live Charts WPF
body: <p>I have been using Live Charts for a WPF application. I have a chart with multiple line series. The tooltip shows the data for all the line series. But on mouse hover on the chart, I would like to see the label of specific line series highlighted (in the tooltip). Is this possible?</p>
  
  <p>Say, I have 10 line series in a chart. When I hover the mouse over any of the ten line series, the tooltip shows the same data. Is there a way that when I hover my mouse over 3rd line series, the data related to the 3rd line series must be highlighted somehow. Any help would be appreciated!</p>
  
  <p>Thanks</p>