ekmett/graphs — pull request #2 by scolobb (2013-09-05 13:42:54+00:00)
Title: Export AdjacencyListGraph and AdjacencyMatrixGraph.

These exports are necessary to allow proper type signatures for functions relying on this library. I have found myself in a weird situation in which I could not write out the type signature for a function using `bfs` because `bfs` requires to be run in the `AdjacencyListGraph` monad, while I could only use the `Graph` monad in type signatures.