title: didSelectRowAtIndexPath not working, Swift 3
body: <p>Can anyone see why in the world didSelectRowAtIndexPath would not be called?  I have triple checked by <code>delegate</code> both in the code and in storyboard.</p>
  
  <pre><code>class AddCard: UIViewController,UIPopoverPresentationControllerDelegate, UITableViewDataSource, UITableViewDelegate {
  
  @IBOutlet weak var cardView: UIView!
  @IBOutlet weak var tableView: UITableView!
  
  let tableItems = ["Background Color","Background Image","Font Style","Font Color"]
  let cellID = "cell"
  
  override func viewDidLoad() {
      super.viewDidLoad()
  
      tableView.delegate = self
      tableView.dataSource = self
  }
  
  override func didReceiveMemoryWarning() {
      super.didReceiveMemoryWarning()
      // Dispose of any resources that can be recreated.
  }
  
  func setBackgroundColor (_ color: UIColor) {
      cardView.backgroundColor = color
  }
  
  func numberOfSectionsInTableView(tableView: UITableView) -&gt; Int {
      return 1
  }
  
  func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -&gt; Int {
      return tableItems.count
  }
  
  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -&gt; UITableViewCell {
      let cell = tableView.dequeueReusableCell(withIdentifier: cellID, for: indexPath as IndexPath)
  
      let row = indexPath.row
      cell.textLabel?.text = tableItems[row]
  
      return cell
  }
  
  func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: IndexPath) {
      tableView.deselectRow(at: indexPath as IndexPath, animated: true)
      print(indexPath.row)
      let row = indexPath.row
      switch(row){
      case 0:
          let popoverVC = storyboard?.instantiateViewController(withIdentifier: "colorPickerVC") as! ColorPickerViewController
          popoverVC.modalPresentationStyle = .popover
          popoverVC.preferredContentSize = CGSize(width: 284, height: 446)
          if let popoverController = popoverVC.popoverPresentationController {
              popoverController.sourceView = self.view
              popoverController.sourceRect = CGRect(x: 0, y: 0, width: 85, height: 30)
              popoverController.permittedArrowDirections = .any
              popoverController.delegate = self
              popoverVC.delegate = self
          }
          present(popoverVC, animated: true, completion: nil)
          break
      default: break
  
      }
  }
  
  }
  </code></pre>