title: UITableView tap to deselect cell
body: <p>I have a <code>UITableViewCell</code> that is selected when tapped. During this selected state, if the user taps the cell again, I want the cell to deselect. </p>
  
  <p>I can't find any of the delegate calls being hit. Any ideas how to implement this? Is it really going to be a gesture recognizer?</p>