Open up issues:
https://github.com/pvcraven/arcade/issues
Before you code, please open an issue for what you are coding, and then check in code with that issue number (like "issue #146") as part of the comments.
You can also suggest improvements to the documentation. All the documentation is in the codebase.
Improving code coverage, and making better test case examples is appreciated.
In the root directory of the project, you should be able to type:
make full(for Windows)sudo ./make.sh(for Linux)
This will build the project, install it, and run all of the tests.