Formatting
Small correction
Convert Dijkstra.
Make BFS more generic.
Fix javadoc.
Work on DijkstraForCentrality.
Small changes to BFSForCentrality.
We want to allow tolerance in the Dijkstra class
Update DijkstraForCentrality.
More general edges.
A few small changes.
Safer: use final
Add explanation.
Finish converting BFSForCentrality.