Updated version to next development SNAPSHOT version.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/trunk@1550250 13f79535-47bb-0310-9956-ffa450edef68
Set the release date.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/trunk@1550251 13f79535-47bb-0310-9956-ffa450edef68