topic: use ui.configoverride() instead of ui.backupconfig() ui.configoverride() was added in hg 4.1. util.nullcontextmanager() was added in hg 4.4.

mkdir -p html

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

netlify deploy