Added TestSmallAStar back in for development
Merge branch 'master' into tests
Made a minor change to Dijkstra
Revert "Made a minor change to Dijkstra"

This reverts commit bf245286fcb240e434e5714dc177c49eb6ec7dbc.
Merge branch 'master' into tests
tweak test data to avoid paths of equal length
clean up output
Merge branch 'tests'.  small gonum graph test fixes