title: Angular ng-repeat groupBy and Keep order
body: <p>Im  using this filter <a href="https://github.com/a8m/angular-filter#groupby">https://github.com/a8m/angular-filter#groupby</a> to order my data like so, and it works great:</p>
  
  <pre><code>&lt;div ng-repeat="(key, value) in tags.tags.objects | groupBy:'category.name' "&gt;
  </code></pre>
  
  <p>Now Im trying to keep the order of that groups, by category.order.</p>
  
  <p>Is this possible?</p>
  
  <p>I tried piping it like so:</p>
  
  <pre><code>&lt;div ng-repeat="(key, value) in tags.tags.objects | groupBy:'category.name' | orderBy:'category.order' "&gt;
  </code></pre>
  
  <p>But it does not make any difference </p>