title: Swift Automatic Row Height for Subtitle Cell
body: <p>I am using a subtitle cell in a UITableView. I have set the following in <code>viewDidLoad</code> to make the row height automatically expand:</p>
  
  <pre><code>    tableView.rowHeight = UITableViewAutomaticDimension
      tableView.estimatedRowHeight = 100
  </code></pre>
  
  <p>I have also set the title and subtitle of the cell to word wrap:</p>
  
  <pre><code>    cell.textLabel?.numberOfLines = 0
      cell.textLabel?.lineBreakMode = .byWordWrapping
  
      cell.detailTextLabel?.numberOfLines = 0
      cell.detailTextLabel?.lineBreakMode = .byWordWrapping
  </code></pre>
  
  <p>When I type in the title, all is good. But the subtitle does not expand the row. Is there something else I need to do to get the subtitle to increase the row height?</p>
  
  <p><img src="https://cloud.githubusercontent.com/assets/8009582/21584830/7472180e-d067-11e6-9b93-61420e9c4adb.png" alt="image"></p>