module documentation

Very few interface defining base class definitions

Class BaseDataLogger abstract base class for a data logger that can be used with an OOOptimizer.
Class EvalParallel allow construct with EvalParallel(fun) as eval_all:
Class OOOptimizer abstract base class for an Object Oriented Optimizer interface.
Class StatisticalModelSamplerWithZeroMeanBaseClass yet versatile base class to replace a sampler namely in CMAEvolutionStrategy