Written a specification (congratulate me with great work) for
automatic transformation of XML documents based on namespaces,
written a software (XML Boiler) to implement these transformations.
Written a short tutorial for XML Boiler.
There was no automatic way to transform between XML files of different formats previously. This new way is a technological revolution.
Most of the specification was implemented in Python programming language, resulting in this free software.
The most important current project goal (as of Apr 2019) is to rewrite the entire project in D programming language (because Python was found too slow and also not enough reliable).
Additional project purpose: Develop some general purpose libraries for D programming language.