Lumen Trails has been professionally translated to French, German, Japanese and Simplified Chinese. Occasionally, we are told that some words used inside the app should be updated. We also get requests to add additional languages. To make this process as smooth as possible going forward, we are open-sourcing our translations. If you'd like to get involved and either update an existing translation, or add an entirely new language, please submit a pull request here.
If you are new to GitHub, you'll find the intro guides at https://guides.github.com. If you'd like to make a small change and would rather not use Git, then please email your proposed change to email@example.com, or open a new issue.