Ah, not quite what I meant but that's probably fine. If you go to https://github.com/medsouz/StarSystems there's a "fork" button at the top right, which automatically creates a copy of the repository in your account which is linked back to the original. If you do that and push changes to that it'll give you the option to submit a "pull request" which notifies the original author and shows them what you've changed, allowing them to pull it back in. It's a pretty nice way to do some collaboration and then discuss why you've done it and what it does. I've pulled your changes to my repo now, will take another look through when I get a chance.