Pyvis only supports string and int types

[DomHudson]

Summary

It would be much better if pyvis supported any hashable types like networkx. This would enable the from_nx interface to be much more flexible. Would it be an option to simply convert the items to a string for rendering if required, but allow a network with any hashable type as a node?

Related entities

https://github.com/WestHealth/pyvis/issues/16