For those of you working with DocBook and Maven, docbkx-tools provides a plugin to generate output formats (HTML, PDF, etc.) as part of the Maven build, by applying the DocBook XSL stylesheets.
The 2.0.17 release adds some improvements, including support for DocBook XSL 1.79.1.
At ForgeRock, we have been relying on docbkx-tools since 2011. The next release of our doc build plugin is using 2.0.17. Upgrade was straightforward. The only issue that still needs fixing is olink support in chunked HTML.