- update to 8.3.0:
* New itertools
* :func:`zip_equal` (thanks to frankier and alexmojaki)
* :func:`split_at`, :func:`split_before`, :func:`split_after`, and :func:`split_when` all got a ``maxsplit`` paramter (thanks to jferard and ilai-deutel)
* :func:`split_at` now accepts a ``keep_separator`` parameter (thanks to jferard)
* :func:`distinct_permutations` can now generate ``r``-length permutations (thanks to SergBobrovsky and ilai-deutel)
* The :func:`windowed` implementation was improved (thanks to SergBobrovsky)
* The :func:`spy` implementation was improved (thanks to has2k1)
* Type stubs are now tested with ``stubtest`` (thankjs to ilai-deutel)
* Tests now run with ``python -m unittest`` instead of ``python setup.py test`` (thanks to jdufresne)