First of all, thank you for coming here! It means a lot to us that you are interested in contributing to our project.
There are actually many ways to contribute:

Issues

First of all, there is the possibility to write & answer issues.
Issues are a way to address bugs, request new features and organize other information on GitHub!
Everyone is free to write & answer issues by themselves.
You can find our issues page here or by clicking on the "Issues" button on the top of the website.

Code

Contributing code is obviously the more challenging & time consuming way to support the project.
To do that you first need to fork our repository & clone it to your local workspace.
Submitting code is possible through making a pull request from your local repository to ours. Please make sure to work on the dev branch & also send your pull request from/to that branch!

Thank you!

You contributing actually means a lot to us and will be very much appreciated!
Cheers for keeping the project fresh & alive! <3