title: How to fork my own repo into a new project?
body: <p>I was developing an HTML5 game engine. I used Git as the SV  and GitHub to actually host the project.</p>
  
  <p>I've made some substantial changes in the design (mainly switching to the Entity System paradigm), and I think it's time for a new engine.</p>
  
  <p>I would like to base it off the old engine, as there is a lot of code that I can use.</p>
  
  <p>What would be the standard way of doing this? The new engine will have a new name, and the old one will be considered "finished".</p>