With v3.0.0 we removed some icons and some codepoints have been reused
for a different (expanding) set. We want to show the old (removed) icons
correctly and the new ones also, so we need the old and the new font for
the webpage and reference it accordingly.
For the a new style .nfold (read: nd-olf) is introduced and utilized.
See pairing commit in the gh-pages branch:
Date: Thu May 4 06:01:33 2023 +0200
Update cheat sheet WITH removed icons
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>