v44.0.0
-------
* #1908: Drop support for Python 3.4.
v43.0.0
-------
* #1634: Include ``pyproject.toml`` in source distribution by
default. Projects relying on the previous behavior where
``pyproject.toml`` was excluded by default should stop relying on
that behavior or add ``exclude pyproject.toml`` to their MANIFEST.in
file.
* #1927: Setuptools once again declares 'setuptools' in the
``build-system.requires`` and adds PEP 517 build support by declaring
itself as the ``build-backend``. It additionally specifies
``build-system.backend-path`` to rely on itself for those builders
that support it.
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