First off all, thanks for taking the time to contribute! 😄👍
Before you create a pull request, you should at least run mvn verify on your machine.
If mvn verify does not run without errors, I cannot merge the pull request, because that would break
the code immediately on the next CI run.
The tests that are run will not only test the java source code, but also the *.dig files that are
included in the project, so mvn verify should be run even if only a *.dig file is changed or added.
To run the tests with mvn verify, maven and a jdk must be installed.
If you want to contribute a *.dig file, but are not familiar with maven and therefore not able to
run mvn verify, it is easier for me if you don't create a pull request, but instead pack the
*.dig files, create an issue, and
attach the zip file to this issue.