0.7

• Build warning-free on GHC 7.10 and GHC 8.0-rc1

0.6

• Fixed the dfs enterVertex and exitVertex order, they were wrong before.
• Factored out a common visitor model for both bfs and dfs.

0.5

• Added enterEdge to bfs and dfs.
• Exported AdjacencyListGraph and AdjacencyMatrixGraph.

0.4.1

• Added CHANGELOG
• Removed my intra-package dependency upper bounds