Added the 'is_pernicious' operator.

Added the 'pythagorean_triples' and 'get_partitions_with_limit' operators.

Added the '_dump_prime_cache' operator.

Added 'filter_max' and 'filter_min' which are shortcuts for much wordier lambda constructions.

Added 'polygonal_pyramidal' and 'polygorial' operators.

The unit test suite has been streamlined so that it runs faster, since it's used so much. Added the -t argument to time individual tests. Added the -f argument to allow filtering which tests will be run (based on a text filter).

A number of bug fixes and improvements have been made to the prime number functions and data.

And the usual bug fixes.