[maven-release-plugin] copy for tag pmd_releases/6.10.0

[maven-release-plugin] copy for tag pmd_releases/6.9.0

[maven-release-plugin] copy for tag pmd_releases/6.8.0

[maven-release-plugin] copy for tag pmd_releases/6.7.0

[maven-release-plugin] copy for tag pmd_releases/6.6.0

[maven-release-plugin] prepare release pmd_releases/6.5.0

[maven-release-plugin] copy for tag pmd_releases/6.4.0

[maven-release-plugin] copy for tag pmd_releases/6.3.0

[maven-release-plugin] copy for tag pmd_releases/6.2.0

[maven-release-plugin] copy for tag pmd_releases/6.1.0