Setupmeta

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* Auto-populate requirements attrs using ``<filepath>`` syntax. (53)

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* Always ensure a number is added to version parts such as ``rc``, as per PEP-440_

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* Don't issue warnings related to versioning on fresh new (still empty) repos

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* Don't do full auto-fill when invoked with ``--name``

* Added tests, do not try to follow relative paths in ``requirements.txt`` (pip doesn't accept them anyway)

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* Avoid infinite recursion with ``setup.py --name``

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* Report package name in ``setup_requires`` when possible,
for local projects referred to via ``-e /some/folder`` in a requirements file