Merge branch 'master' of...

Merge branch 'master' of git.rwth-aachen.de:monticore/EmbeddedMontiArc/languages/CNNArchLang into timmermanns

.gitlab-ci.yml

+image: maven:3-jdk-8
+
+build:
+  script: "mvn -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn -B clean install --settings settings.xml"