Add the ability to filter or partition nodes as a function of other properties

[dartar]

This is a fantastic tool, thanks for releasing it (you're getting quite a lot of love on social media (1 - 2).

It would be really great to add the following two options:

• filter the graph by some other (property,value) pair. For example, I'd love to be able to clean up this graph and only display nodes that are an instance of a state.
• partition nodes by some other (property,value) pair. For example it would be great to group these nodes/subgraphs as a function of country)

[AngryLoki]

After your report I've added SPARQL mode, which could be useful for few advanced user. Example url: Connectivity of the USA states. With sparql it should not be difficult for me to implement node coloring, node radii, link width and coloring.

[dartar]

neat, this is very exciting (especially the additional partitioning this will allow). Gave you a shoutout here: https://twitter.com/WikiResearch/status/721142585792667648