v4.0.0
This release contains only minor enhancements, such as a new placeholder that is available for the propertyFile option of the PropertyCatalog check.
This is a new major version because starting with Checkstyle 7.0, Checkstyle requires Java 8. So Checkstyle Addons is now also compiled for Java 8 by default. If you are on a previous Java version, that's fine! You may use the artifacts postfixed with java7 or java6, respectively. They are functionally equivalent, but work with previous levels of Java and the corresponding older versions of Checkstyle.