title: Implement 3D Touch "Peek and Pop" for Manual Segue
body: <p>I'm trying to figure out how to implement the "Peek and Pop" 3D touch feature for an application I'm working on, and I'm not sure how to implement that functionality for a manual segue, so any help or documentation would be much appreciated.</p>
  
  <p>To give you a little more information, I have a <code>UITableView</code> who's controller has 2 manual segues that my code picks between depending on what table element the user taps on. If it's one segue I've dragged from the prototype table cell to the target view controller, I can check a box, but that box is not present for manual segues.</p>
  
  <p>I've done a bit of Googling to see if there is documentation on this, but I couldn't find anything.</p>