* fix popcount64 name conflict on NetBSD
* even though PyPy is not actively supported, allow running
tests for PyPy 3.7 and 3.8
* allow running ``python setup.py test``
* add official Python 3.12 support
* simplify count functionality in util module
* retire ``bitcount_lookup[256]`` table
* improve ``util.count_n()`` error messages
* avoid ``util`` module tests from being run more than once in
each call to ``bitarray.test()`` when called multiple times in
the same Python process
* improve testing
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-bitarray?expand=0&rev=31