Graph visualizer

[thatfellarobin]

There should be a way to visualize the graph.

Some traits of the visualization:

• Interact-able GUI? It should show a very brief summary (maybe even just the title and first author) to begin with, but can be expanded to see details like the abstract, full author list, etc.
• Export into a common graph file format (e.g., .graphml) to import into a graph designer (e.g., yEd)
• Nodes organized with date along one axis (top-down or left-right, not sure yet), with the sorting along the other axis to minimize edge crossings
• Nodes could be sized by impact
• Nodes could be colour-coded somehow, maybe by whether they are kept permanently, or if they have been "expanded" (search for upstream and downstream articles complete)

[thatfellarobin]

igraph includes some plotting capability. I'm not sure if it's useful for our use case yet, I haven't looked into it.