File local-variables error when opening README.org without loading library

Hi, thanks for shipping this even though it's "unpackaged". Love expanding the kitchen-sinkiness of Emacs.

When I open the README.org without having loaded the package, I get the message

File local-variables error: (void-function unpackaged/org-export-html-with-useful-ids-mode)

IDK if you want to do something about that special case, but thought I'd report it.

What's weird for me is that I have `(setq enable-local-variables :safe)` which sounds like it would ignore that, but it does not.