Python C-based extension implementing fast integer bit sets
Description
The intbitset library provides a set implementation to store sorted unsigned
integers either 32-bits integers (between 0 and 2**31 - 1 or
intbitset.__maxelem__) or an infinite range with fast set operations implemented
via bit vectors in a Python C extension for speed and reduced memory usage.
The inbitset class emulates the Python built-in set class interface with some
additional specific methods such as its own fast dump and load marshalling
functions.
