[maven-release-plugin] prepare for next development iteration
Merge branch 'release/0.3.0' into develop

* release/0.3.0:
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release v0.3.0
changed to thymeleaf-spring4
[maven-release-plugin] prepare release v0.3.1
Merge branch 'release/0.3.1'

* release/0.3.1:
  [maven-release-plugin] prepare release v0.3.1
  changed to thymeleaf-spring4
  [maven-release-plugin] prepare for next development iteration