title: ng-class-even not applying class
body: <p>So I'm trying to zebra stripe my <code>ng-repeat</code> so the rows can be easily distinguished.</p>
  
  <p>I think I have everything wired up correctly, but the classes just aren't being applied.</p>
  
  <p>I've created a <a href="http://plnkr.co/edit/0bNMi8m2p2g8b15oqJUI?p=preview" rel="noreferrer">plunker here</a>.</p>
  
  <p>My html looks like this:</p>
  
  <pre><code>&lt;div ng-repeat="removal in removals" ng-class-even="even" ng-class-odd="odd" class="remove-relation-titles-list"&gt;
        &lt;div class="pull-left relation-titles-left-list"&gt;
             &lt;span class="acct-title acct-num"&gt;{{removal.AcctType}} {{removal.AcctNo}}&lt;/span&gt;
             &lt;span class="acct-title"&gt; - Standard Checking&lt;/span&gt;
        &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>So, the regular class is being applied just fine, but the even and odd ones aren't at all. If you inspect the object and add the <code>even</code> class yourself, it shows up beautifully.  I've tried moving this down to the <code>div</code> inside the <code>ng-repeat</code> with no results.</p>
  
  <p>Am I missing something obvious?</p>