title: Angular Directive refresh on parameter change
body: <p>I have an angular directive which is initialized like so:</p>
  
  <pre><code>&lt;conversation style="height:300px" type="convo" type-id="{{some_prop}}"&gt;&lt;/conversation&gt;
  </code></pre>
  
  <p>I'd like it to be smart enough to refresh the directive when <code>$scope.some_prop</code> changes, as that implies it should show completely different content.</p>
  
  <p>I have tested it as it is and nothing happens, the linking function doesn't even get called when <code>$scope.some_prop</code> changes. Is there a way to make this happen ?</p>