See Contributing in README.md.
The below is from the README and I'll try to keep it in sync.
Thanks in advance if you want to contribute! Feel free to complete any todos for me or add anything else you want to add. Then just submit a pull request! If you don't understand something about the integration (eg. a part of the code - it may be hard to read sometimes) then please feel free to ask me. You can do that via an issue. I also use some python scripts to build and test the integration so if you want, you can use it as well (see top of tasks.py for more information about how to use it and more).