examples/pop-uniform.py CMAWrapper: Do not pass the bounds parameter

Too tight bounds (less than several times the actual optimality area)
are totally detrimental to CMA performance with the default bounds
handler, turns out.
examples/pop-uniform.py: Update code to cma-1.1.02
MinimizeMethod: Include CMA in the default implementation

We further lower the bar to use CMA in a portfolio.
methods.py: Clean up for PEP8
MinimizeMethod CMA: Store cma.fmin() parmaeters in minimizer_kwargs

We will need to vary them based on the exact method name.
MinimizeMethod CMA: CMAWrapper class -> cma_wrapper function

Less indirection and indentation, no need to carry extra state around anymore.
MinimizeMethod CMA: Add support for the IPOP-CMA, BIPOP-CMA methods