test-split: split now ignores diff.* settings
From 66399f2e92aa: "It is assumed by the author that the `[diff]` section is
primarily for *viewing* diffs, and that it is unlikely what people intend when
attempting to commit or revert."
mkdir -p html
cp index.html html/
cp *.css html/
cp *.js html/
cp -R img html/
cp -R graphviz-images/ html/
netlify deploy