Changes since 0.5.1.0
=====================
* Add support for passing a single Haskell source file rather than a
Cabal file as the argument, as requested by Curt Sampson.
* Shade backgrounds of modules when clustering Entities.
* RelativeNeighbourhood doesn't provide good alternate modules and
takes up too much runtime, and so has been removed.
Changes since 0.5.0.0
=====================
* Re-write of parsing.
* Usage of new graphviz and Graphalyze features.
* More abstraction into common routines into Analyse.Utils