Comment out the CMAES algo by default as intended to avoid testing confusion.
Remove EOL whitespace.
Set default for xbound to None, rather than 5 in FunctionEnvironment.

This fixes the issue with using FunctionEnvironment with the GA optimizer.
Improved error reporting in BlackBoxOptimizer.learn.
Don't try to take more samples from the children array than are present.
Remove EOL whitespace.
Remove EOL whitespace
Further logging improvements to ease debugging.