Minor comment fix.
Some improvements to benchmarking.
speeding up random graph generation
undirected graphs generation fix
speeding up graph generation - review fixes
speeding up graph generation - review fixes 2
speeding up graph generation - review fixes 3
speed up graph generation review fixes 4
speed up graph generation review fixes 4
Merge pull request #65 from szymonm/SpeedUpRandomGraph

speeding up random graph generation (ticket #63)
Upping revision number plus minor code syntax type changes.