[maven-release-plugin] copy for tag v3.1.0

[maven-release-plugin] copy for tag v2.2.2

[maven-release-plugin] copy for tag v2.2.1

[maven-release-plugin] copy for tag v2.2.0

[maven-release-plugin] copy for tag v2.1.3

[maven-release-plugin] copy for tag v2.1.2

[maven-release-plugin] copy for tag v2.1.1

[maven-release-plugin] copy for tag v2.1.0

First oficial release (v1.0.0) of jzmq.

From this release on we will try to use Semantic Versioning.

http://semver.org/