Simple but high performance Cython hash table mapping pre-randomized keys to
void* values. Inspired by
Jeff Preshing.
All Python APIs provded by the BloomFilter and PreshMap classes are
thread-safe on both the GIL-enabled build and the free-threaded build of Python
3.14 and newer. If you use the C API or the PreshCounter class, you must
provide external synchronization if you use the data structures by this library
in a multithreaded environment.