QUDT Release 2.1.23

HEADS UP on some important changes coming in January, 2023

In the January Release, there will be two significant changes that will likely require you to change some configurations in your use of QUDT. We are announcing it here so that you have time to decide how to adjust.

1. As SHACL becomes more popular, and because of its validation capabilities over OWL, we will be making the SHACL schema the default instead of the OWL schema. What this really means is that in the facade file, the import statement will point to the SHACL graph instead of the OWL graph. The role of the facade file is documented here. If you want to stay with the OWL schema, you can simply edit your local copy of the facade file to import http://qudt.org/2.1/schema/qudt.
2. As directed by GitHub, we will be renaming the QUDT master branch to "main".

Meanwhile, Release 2.1.23 includes:

• Fixed an erroneous qudt:symbol for KiloGM2-PER-SEC2 (thanks to @fkleedorfer)
• Added some missing dimension vectors that were referred to
• Added a mapping to units found in the IFC (Industry Foundation Class) ontology. This mapping can be found in the community folder. Our policy is that we provide native mappings to other unit-of-measure ontologies, but mappings to ontologies that happen to include some units but are focused on other things will be located in the community folder (thanks again @fkleedorfer)
• Added some prefixed BTU units (thanks to @fennibay)

Thank you as always for providing submissions to extend the size and capabilities of QUDT!