If you don't write code, you can contribute to this project by letting us know about features you want, errors you've found, or things that you wish worked differently. To do that, open a ticket (you'll need a GitHub account)! The worst thing that can happen is that someone will say "we probably can't do that, but thanks for your input!"
We're using GitHub's issue tracker to prioritize development tasks. Feel free to pick off an issue, fork a repo, fix it, and send a pull request. For help setting up your development environment, click here.