Update wheel to 0.32.0

[pyup-bot]

This PR updates wheel from 0.31.1 to 0.32.0.

Changelog

0.32.0

- Removed wheel signing and verifying features
- Removed the "wheel install" and "wheel installscripts" commands
- Added the ``wheel pack`` command
- Allowed multiple license files to be specified using the ``license_files``
option
- Deprecated the ``license_file`` option
- Eliminated duplicate lines from generated requirements in
``.dist-info/METADATA`` (thanks to Wim Glenn for the contribution)
- Fixed handling of direct URL specifiers in requirements
(PR by Benoit Pierre)
- Fixed canonicalization of extras (PR by Benoit Pierre)
- Warn when the deprecated ``[wheel]`` section is used in ``setup.cfg``
(PR by Jon Dufresne)

Links

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

[pyup-bot]

Closing this in favor of #41