obshistory: use a more appropriate type for obslog entries cand is actually a regular changeset and not 'M' (graphmod.MISSINGPARENT). And 'M' is only used for graph edges, but cand is drawn as a graph node. Visually there's no effect, but the code makes more sense this way.

mkdir -p html

cp index.html html/
cp *.css html/
cp *.js html/
cp -R img html/
cp -R graphviz-images/ html/

netlify deploy