Update check-manifest to 0.37

[pyup-bot]

This PR updates check-manifest from 0.36 to 0.37.

Changelog

0.37

-----------------

- Drop Python 3.3 support.

- Support packages using ``setuptools_scm``
(`68 <https://github.com/mgedmin/check-manifest/issues/68>`__).

Note that ``setuptools_scm`` usually makes MANIFEST.in files obsolete.
Having one is helpful only if you intend to build an sdist and then use that
sdist to perform further builds, instead of building from a source checkout.

Links

• PyPI: https://pypi.org/project/check-manifest
• Changelog: https://pyup.io/changelogs/check-manifest/
• Repo: https://github.com/mgedmin/check-manifest

[coveralls]

Coverage remained the same at 30.479% when pulling 3aab748 on pyup-update-check-manifest-0.36-to-0.37 into 5bb5c99 on master.

[coveralls]

Coverage remained the same at 30.479% when pulling 3aab748 on pyup-update-check-manifest-0.36-to-0.37 into 5bb5c99 on master.