Modify the strongly_connected_components algorithm to keep track of edges between components.
Refactoring the strongly_connected_components function.
- Add slow version of strongly connected components computation, for testing.
- Add ElementTransformSet, just for fun.
Merge branch 'master' into scc-graph
Merge from master; fix conflicts in i_directed_graph.py.
Merge from master; manual fixes.
Remove duplicate module.
Fix import.
Merge pull request #17 from mdickinson/extra-scc-tests

Extra scc tests
Merge remote-tracking branch 'origin/master' into scc-graph
Merge remote-tracking branch 'origin/master' into scc-graph
Merge remote-tracking branch 'origin/master' into scc-graph
Add source_components method.
PEP8 nitpicking.
Merge pull request #34 from mdickinson/scc-graph

Add source_components method.