title: createjs - end label animation detection
body: <p>I have some tweens create with Adobe AnimateCC and, this animation have 3 labels:</p>
  
  <p>from console i can get it:  </p>
  
  <pre><code>elm.children[0].timeline._labels    
  Object {animation_1: 0, animation_2: 31, animation_3: 62}
  </code></pre>
  
  <p>The issue is: if i trigger animation_1, will trigger animation_1, 2 and 3.
  if i trigger animation_2, will trigger animation_2 and 3.</p>
  
  <p>How I can detect the final of every single label, to set up a call back when this label animation is finished?</p>
  
  <pre><code>elm.getChildAt(0).gotoAndPlay("animation_1");
  </code></pre>
  
  <p>then detect when this label is finish.</p>