title: Highlighting Group on Item Selection in Vis-Timeline
body: <p>Is it possible to highlight the group on selection of timeline item of which it is a part of?</p>
  <p>Example:
  <a href="https://i.stack.imgur.com/CK3be.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CK3be.png" alt="Timeline SS" /></a></p>
  <p>From attached example, if I am selecting item (item 17), Group 'Alston' should somehow gets highlighted (or somehow I change its CSS, so that a person can understand which group item is selected)</p>