If you're interestred in contributing, you can browse the issues list or create a new one to discuss your feature idea. Every contribution is very welcome.
Use building instructions or join Discord or Matrix Channel for a chat if you need an advice or want to discuss the project.
You can help to make this project accessible to everyone by contributing to its localizations.
Localization service and hosting is provided by Weblate.
Yattee and its components is shared on AGPL v3 license.