Path

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- Renamed ``namebase`` to ``stem`` to match API of pathlib.
Kept ``namebase`` as a deprecated alias for compatibility.

- Added new ``with_suffix`` method, useful for renaming the
extension on a Path::

orig = Path('mydir/mypath.bat')
renamed = orig.rename(orig.with_suffix('.cmd'))

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- Packaging refresh and readme updates.

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- 130: Removed surrogate_escape handler as it's no longer
used.

------

- 124: Fixed ``rmdir_p`` raising ``FileNotFoundError`` when
directory does not exist on Windows.

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- 115: Added a new performance-optimized implementation
for listdir operations, optimizing ``listdir``, ``walk``,
``walkfiles``, ``walkdirs``, and ``fnmatch``, presented
as the ``FastPath`` class.

Please direct feedback on this implementation to the ticket,
especially if the performance benefits justify it replacing
the default ``Path`` class.

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- Symlink no longer requires the ``newlink`` parameter
and will default to the basename of the target in the
current working directory.