title: does fabricjs support letterspacing now?(fabricjs 2.0.0-beta5)
body: <p>I am trying to add letterspacing feature to my photo/text editing project using fabricjs.   </p>
  
  <p><strong>Tried code</strong></p>
  
  <pre><code>var newText= new fabric.IText('New Text', {
    fontWeight:200,
    fontSize:30,
    letterSpacing:30,//this line
    fill:"rgb(0,0,0)"
  });
  </code></pre>
  
  <p>But not working.
  I found that this topic was found in 2015-2016 and think that it's solved now.
  But I can't find solution how to use letterspacing in fabricjs.<br>
  Topic1: <a href="https://github.com/kangax/fabric.js/issues/1974#issuecomment-255216649" rel="nofollow noreferrer">https://github.com/kangax/fabric.js/issues/1974#issuecomment-255216649</a></p>