title: Is there a way to use the new UIPresentationController with push/pop transitions, not just modal?
body: <p>It seems all the docs I've read refer to using the new <code>UIPresentationController</code> with modal presentations, but none refer to <code>UINavigationController</code>-based push/pop transitions. Are these possible with iOS 8, if so, how do I present them?</p>