This project provides RELAX NG grammars for XSLT stylesheets. Because
stylesheets must have a version number, it's straightforward for a
RELAX NG validator to choose between the xslt10.rnc, xslt20.rnc,
and xslt30.rnc grammars.
Support for XSLT 3.0 is now provided via a git subtree merge with https://github.com/innovimax/xslt30.git
Having a RELAX NG grammar makes syntax directed editing of XSLT stylesheets much easier in tools like Emacs and oXygen that support RELAX NG.