Bumped version number to 3.1.0
add first version of release-script
[maven-release-plugin] prepare release 3.1.0
[maven-release-plugin] rollback the release of 3.1.0
[maven-release-plugin] prepare release choco-3.1.0
[maven-release-plugin] prepare for next development iteration
Merge branch 'release-3.1.0' into develop