title: hover mode on Chart.js
body: <p>Is it possible to have the hover activated when you are not hovering over a specific 'point' in a line graph? </p>
  
  <p>I want <em>that</em> particular tooltip to activate whenever I hover over any part of the chart.</p>
  
  <p><strong>Edit:</strong> something like this <a href="http://watchstocks.herokuapp.com/" rel="noreferrer">http://watchstocks.herokuapp.com/</a></p>