GA-0.2: Changelog

Changelog for GA, a Haskell library for working with genetic algorithms:
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v0.1 (Aug. 31st 2011):

* initial release
* support for:
	- evolution of arbitrary entities (see Entity type class)
	- checkpointing between generations with automatic restore from checkpoint
* two toy examples

v0.2 (Sept. 19th 2011):

* fixed compilation warnings in GA module and examples
* major API changes
  - generalized result type of evolve from IO a to Monad m => m a
  - hist genRandom, crossover, mutation adn scores into genertic Monad m
* introduced evolveVerbose which allows checkpointing, and prints
  progress to stdout (requires liftIO)
* implemented random search
* code cleanup and reorganization