Contributions are highly apreciated. Here are some ideas:
- **Create new renderers**, at the moment I have only created a renderer that uses handlebars, pulldown-cmark and renders to html. But you could create a renderer that uses another template engine, markdown parser or even outputs to another format like pdf.
- **Add tests** I have not much experience in writing tests, all help to write meaningful tests is thus very welcome
- **Smaller tasks** I try to add a lot of the remaining tasks on the issue tracker with the label: [`Enhancement`](https://github.com/azerupi/mdBook/issues?q=is%3Aopen+is%3Aissue+label%3AEnhancement). Just pick one that looks interesting. The majority of the tasks are small enough to be tackled by people who are unfamiliar with the project.