Update setuptools to 49.1.3

[pyup-bot]

This PR updates setuptools from 49.1.0 to 49.1.3.

Changelog

49.1.3

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* 2212: (Distutils) Allow spawn to accept environment. Avoid monkey-patching global state.
* 2249: Fix extension loading technique in stubs.

49.1.2

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* 2232: In preparation for re-enabling a local copy of distutils, Setuptools now honors an environment variable, SETUPTOOLS_USE_DISTUTILS. If set to 'stdlib' (current default), distutils will be used from the standard library. If set to 'local' (default in a imminent backward-incompatible release), the local copy of distutils will be used.

49.1.1

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* 2094: Removed pkg_resources.py2_warn module, which is no longer reachable.

Links

• PyPI: https://pypi.org/project/setuptools
• Changelog: https://pyup.io/changelogs/setuptools/
• Repo: https://github.com/pypa/setuptools

[coveralls]

Coverage remained the same at 86.168% when pulling 5203fd2 on pyup-update-setuptools-49.1.0-to-49.1.3 into 53472a5 on master.

[pyup-bot]

Closing this in favor of #237