Tagging 1.18 release 

[maven-release-plugin] copy for tag 1.18-rc2 

[maven-release-plugin] copy for tag 1.18-rc1 

Tagging 1.17 release 

Tagging 1.16 release 

Tagging 1.15 release 

[maven-release-plugin] copy for tag 1.15-rc1 

[maven-release-plugin] copy for tag 1.14-rc1 

[maven-release-plugin] prepare release 1.13-rc1 

[maven-release-plugin] copy for tag 1.13-rc1