We are happy to receive pull-requests if you want to contribute new features or bugfixes to the project. Please use the code style settings that you can find in the code-style directory. If you use IntelliJ, please make sure it properly picks up the settings from the EditorConfig file (this should be the default behavior though).
Issues labeled help wanted or good first issue can be good first contributions.
If you want to thank the author for this library or want to support the maintenance work, we are happy to receive a donation.