[maven-release-plugin] copy for tag collections-3.2.1

[maven-release-plugin] copy for tag collections-3.2.0

[maven-release-plugin] copy for tag collections-3.1.0

[maven-release-plugin] copy for tag collections-3.0.3

[maven-release-plugin] copy for tag collections-3.0.2

[maven-release-plugin] copy for tag collections-3.0.1

Release v2.0