title: How to enable tab navigation to the next editable cell in a different row group?
body: <p>I'm building an application using ag-grid enterprise 4.0.7, which uses row groups and has editable fields, keyboard navigation between editable cells is essential.</p>
  
  <p>Built-in tab navigation works well, but only within a row group. Once the last editable cell in a group is reached, pressing tab does NOT jump to the next editable cell in the next group but rather to some unrelated element on the page.</p>
  
  <p>Here's an example based on an ag-grid documentation sample, the athletes' names are editable, tab navigates to the next athlete, but only within one country: <a href="https://jsfiddle.net/pfhkf3bm/" rel="nofollow">https://jsfiddle.net/pfhkf3bm/</a></p>
  
  <pre><code>field: "athlete",
  editable: true
  </code></pre>
  
  <p>Is this the intended behavior? What's the cleanest way to extend the tab navigation to jump to the next editable item in another group?</p>
  
  <p>Thanks!</p>