Changelog:
===========
* improving free-threading readiness, see also #251:
- initialize tables at module import, not lazily
- remove caching imported Python objects (which are already caches)
- added 75 critical sections in Python-facing operations
- updated Trove Classifier to ;Free Threading :: 2 - Beta;
* clip arguments in ;.bytereverse(); instead of raising ;IndexError;
* remove ;ssize_richcompare(); in favor of ;Py_RETURN_RICHCOMPARE; macro
* add tests for frozenbitarrays created by methods when ;self; is a
frozenbitarray, e.g. slicing a frozenbitarray
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>