title: How to create multi ring donut pie chart?
body: <p>I need to create a multi ring donut pie chart. </p>
  
  <p>I need space between those rings for good visual feel like the below image.</p>
  
  <p><img src="https://i.stack.imgur.com/sw6o2.png" alt="enter image description here"></p>
  
  <p>Is there anyway to achieve this requirement using <code>highcharts</code> ? We are using <code>4.0.1</code> version</p>
  
  <p>Thanks in advance </p>