Merge branch 'dev' into 'master'

.gitignore

.gitlab-ci.yml

CONTRIBUTING.md

README.md

build.gradle

...src/main/java/org/jastadd/relast/plugin/RelastPlugin.java

...c/src/main/java/org/jastadd/relast/plugin/RelastTest.java

...A-INF/gradle-plugins/org.jastadd.relast.plugin.properties

gradle/wrapper/gradle-wrapper.jar

gradle/wrapper/gradle-wrapper.properties

gradlew

gradlew.bat

settings.gradle

src/main/jastadd/Analysis.jrag

src/main/jastadd/RelAst.parser

src/main/jastadd/backend/NameResolution.jadd

src/main/jastadd/backend/Serializer.jadd

src/main/resources/RelASTVersion.properties

src/test/jastadd/constructors/Constructors.relast

src/test/jastadd/relations/Relations.relast