title: How to enumerate ALL nodes in a Sprite Kit scene?
body: <p>I want to enumerate all the nodes in my scene. Not just the ones that are a child of the scene itself, but also the children of those, and the children of those etc... So I want to be able to go through the whole node hierarchy.</p>
  
  <p>Is there a method to do that without knowing how deep the node tree goes?</p>