Hi all! Greg has made a patch and a pull request: https://github.com/tobyink/p5-html-html5-parser/pull/3 but so far, we haven't heard from the main developer.
Also, as you can see, the patch is met with some resistance, so we're not really sure how to solve this now... Meanwhile, we should relax the relationships between this module and the RDF toolchain. The HTML parser really is somewhat on the outskirts and isn't a dependency to any of it, so it shouldn't have that far-reaching consequences. Cheers, Kjetil