If you find what looks like a bug:
- Check the GitHub issue tracker to see if anyone else has reported issue.
- If you don’t see anything, create an issue with information on how to reproduce it.
If you want to contribute an enhancement or a fix:
- Fork the project on github.
- Create a topic branch.
- Make your changes with tests.
- Commit the changes without making changes to the Rakefile or any other files that aren’t related to your enhancement or fix.
- Send a pull request.
See also How to setup a development virtual server with Virtualbox.