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- Added ``bytes_as_strings`` option to ``Pickler``, ``dump``, and ``dumps``.
- Incomplete support for Python 3.2:
- Move ``_pickle.c`` -> ``_pickle_33.c``.
- Clone Python 3.2.3's ``_pickle.c`` -> ``_pickle_32.c`` and apply the
same patch.
- Choose between them at build time based on ``sys.version_info``.
- Disable some tests of 3.3-only features.
- Missing: implementation of ``noload()`` in ``_pickle_32.c``.
- Missing: implementation of ``bytes_as_strings=True`` in ``_pickle_32.c``.