[maven-release-plugin] prepare release 0.19

git-svn-id: https://svn.apache.org/repos/asf/rave/trunk@1430076 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/rave/trunk@1430078 13f79535-47bb-0310-9956-ffa450edef68