Bugs and new features are being discussed on the GitHub Issue Tracker. The issue "Previous discussions and feature requests" lists some of the features that were rejected - either because they did not fit conceptually or because I could not figure out how to implement them.
The translations are managed on Weblate.
Help is very welcome. Be it in the form of code, or artwork, or enhancements to the website, or tutorial videos, or whatever. But please suggest new features or enhancements in advance on the Issue Tracker before implementing them.
#319 | #307 | #217 | #206 | #126
Contributors - like the main translators for a certain language - are listed as co-autors of this project in AUTHORS.md. Bonus: If you are on this list, you are automatically eligable for a free German beverage. To be redeemed in Stuttgart.