[maven-release-plugin] copy for tag 0.8.1

[maven-release-plugin] copy for tag 0.8.0

[maven-release-plugin] copy for tag 0.7.7

[maven-release-plugin] copy for tag 0.7.6

[maven-release-plugin] copy for tag 0.7.5

[maven-release-plugin] copy for tag 0.7.4

[maven-release-plugin] copy for tag 0.7.1

[maven-release-plugin] copy for tag 0.7

[maven-release-plugin] copy for tag 0.6.10

[maven-release-plugin] copy for tag 0.6.8