First of all, thank you for considering a contribution to this project. 😊 Whether it's a small fix, an idea, a bug report, or some feature code, actions that impact the project positively are always very welcome.
Feel free to submit a PR directly, if your change is in code and small and isolated. If you're in doubt about whether your contribution is a good idea for the project, feel free to create an issue first discussing the change. This also applies for any larger changes; start with an issue instead of risking a large PR that doesn't get accepted, which would make everyone involved sad.
By contributing code, you declare that you have the rights to add it, and you accept that it will be published in the project under the existing license.