- The XRef implementation is competely refactored to work with the common DocBook Project stylesheets version 1.72. The goal is to support the DocBook Project xreftyle and olink capabilities. In normal use, the changes should be transparent.

- `Dblatex` accepts input data from standard input. Therefore, the result of some pre-processing (like profiling) can be piped to dblatex.

- Several user stylesheets (option -p) can be passed. Note that each stylesheet is imported (not included) which have significant impact on precedence or overriding behaviour.

- Other minor improvements and a number of bug fixes.