[maven-release-plugin] prepare release directmemory-0.2

git-svn-id: https://svn.apache.org/repos/asf/directmemory/trunk@1521812 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/directmemory/trunk@1521814 13f79535-47bb-0310-9956-ffa450edef68