Add an optional C-implementation for configmix.config.unquote and configmix.config.pathstr2path. This is currently for Python 3.5+. It is tested with Python 3.7 and Python3.8 (FreeBSD 12.2 amd64, LLVM 10.0.1). A build for the stable API ("abi3") fails because PyUnicode_New() is currently not in the stable API. Also includes are extended tests for unquote() and pathstr2path().

# -*- coding: utf-8 -*-
# :-
# :Copyright: (c) 2015-2020, Franz Glasner. All rights reserved.
# :License:   BSD-3-Clause. See LICENSE.txt for details.
# :-
"""Sub-package for some extras implementations.

"""

from __future__ import division, absolute_import, print_function


__all__ = []