title: ng-animate not working in 1.3
body: <p>I am getting the class <code>ng-animate</code> applied to the directive but I'm not getting:</p>
  
  <p><code>ng-hide-remove.ng-hide-remove-active</code> or <code>.ng-hide-remove.ng-hide-remove-active</code></p>
  
  <p>I have angular and angular-animate 1.3 loaded. and am including <code>ngAnimate</code> in app.js</p>
  
  <pre><code>&lt;div class="message animate-show {{message.type}}" ng-show="message"&gt;
      {{message.text}}
  &lt;/div&gt;
  </code></pre>
  
  <p>The transitions are not happening:</p>
  
  <pre><code>.message.animate-show {
      line-height:20px;
      opacity:1;
      padding:10px;
  
      &amp;.ng-hide-add.ng-hide-add-active,
      &amp;.ng-hide-remove.ng-hide-remove-active {
          -webkit-transition:all linear 0.5s;
          transition:all linear 0.5s;
      }
  
      &amp;.ng-hide {
          line-height:0;
          opacity:0;
          padding:0 10px;
      }
  }
  </code></pre>