Use new maven-numbers-plugin
Latest Guava.
[maven-release-plugin] prepare release ness-oss-parent-30
[maven-release-plugin] prepare for next development iteration
Fix numbers-maven-plugin reference
Latest slf4j-api, kawala
Latest Guava
Latest joda-time
[maven-release-plugin] prepare release ness-oss-parent-31
[maven-release-plugin] prepare for next development iteration