FIX Configuration.validate errors
FIX pass value to option.validate
refactor rename 'param'->'option'
refactor -> PEP8 whitespace
refactor rename 'option.py'->'options.py'
refactor rename '_base.py'->'option.py'
refactor -> PEP8 Option.__init__
refactor move ConfigMeta to config.py
FIX Option.__set__, Option.validate + tests