Some usefull artefacts in a mvn-repository.
Add this repository to your project:
<repositories>
<repository>
<id>dans-er.mvn.repo</id>
<url>https://github.com/dans-er/mvn-repo/raw/master</url>
</repository>
</repositories>
dans-prototype has usefull features. Make it the parent of your project:
<parent>
<groupId>nl.knaw.dans.platform</groupId>
<artifactId>dans-prototype</artifactId>
<version>1.3.1</version>
</parent>