[maven-release-plugin] copy for tag v0.4.15

[maven-release-plugin] copy for tag v0.4.14

[maven-release-plugin] copy for tag v0.4.13

[maven-release-plugin] copy for tag v0.4.12

JavaDocs, code cleanup

[maven-release-plugin] copy for tag v0.4.11

[maven-release-plugin] copy for tag v0.4.10

[maven-release-plugin] copy for tag v0.4.9

[maven-release-plugin] copy for tag v0.4.8

[maven-release-plugin] copy for tag v0.4.7