Changed intsum2 to output int instead of float.
Added simple optimization for not_prime() function.
Modified wrapper to take more general positional arguments.
Changed default value of something_filelike, and behavior of timed_manager to actually expect and use a file-like object.
Changed IterateMe_2 __init__ to preserve given start and stop values.
Changed check_to_keep_going() name to _check_to_keep_going().
Changed __iter__ to not waste memory.