Vendored third-party libraries

File	Library	Version	License	Source
sigma.min.js	sigma.js	3.0.2	MIT	https://cdn.jsdelivr.net/npm/sigma@3.0.2/dist/sigma.min.js
graphology.umd.min.js	graphology	0.26.0	MIT	https://cdn.jsdelivr.net/npm/graphology@0.26.0/dist/graphology.umd.min.js

Vendored (not loaded from a CDN) so the site also works offline and from file://.