Bump tox from 3.13.2 to 3.16.1

[dependabot-preview]

Bumps tox from 3.13.2 to 3.16.1.

Changelog

Sourced from tox's changelog.

v3.16.1 (2020-06-29)

Bugfixes

• Fixed the support for using {temp_dir} in tox.ini - by webknjaz #1609

v3.16.0 (2020-06-26)

Features

• Allow skipping the package and installation step when passing the --skip-pkg-install. This should be used in pair with the --notest, so you can separate environment setup and test run:

  tox -e py --notest
  tox -e py --skip-pkg-install
  

  by gaborbernat. #1605

Miscellaneous

• Improve config parsing performance by precompiling commonly used regular expressions - by brettlangdon #1603

v3.15.2 (2020-06-06)

Bugfixes

• Add an option to allow a process to suicide before sending the SIGTERM. - by jhesketh #1497
• PyPy 7.3.1 on Windows uses the Script folder instead of bin. - by gaborbernat #1597

Miscellaneous

• Allow to run the tests with pip 19.3.1 once again while preserving the ability to use pip 20.1 - by hroncok #1594

v3.15.1 (2020-05-20)

Bugfixes

• tox --showconfig no longer tries to interpolate '%' signs. #1585

Commits

• 7219c0a release 3.16.1
• 1b4c4e5 🐛 Register {temp_dir} as a valid substitution (#1609)
• 6b742d0 Merge pull request #1607 from tox-dev/release-3.16.0
• b86168b release 3.16.0
• 7140ef8 Allow true separation of environment setup and test run (#1606)
• 9f49997 Precompile common regular expressions (#1603)
• e320b19 Merge pull request #1598 from tox-dev/release-3.15.2
• d340d89 release 3.15.2
• 121ef6b PyPy 7.3.1 now generates Scripts instead of bin on Windows (#1597)
• 6360176 Add option to delay propegating SIGINT to child process (#1588)
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #314.