Update tox requirement from <3.18,>=3.1 to >=3.1,<3.19

[dependabot-preview[bot]]

Updates the requirements on tox to permit the latest version.

Changelog

Sourced from tox's changelog.

v3.18.0 (2020-07-23)

Deprecations (removal in next major release)

• Add allowlist_externals alias to whitelist_externals (whitelist_externals is now deprecated). - by dajose #1491

v3.17.1 (2020-07-15)

Bugfixes

• Fix tests when the HOSTNAME environment variable is set, but empty string - by hroncok #1616

v3.17.0 (2020-07-14)

Features

• The long arguments --verbose and --quiet (rather than only their short forms, -v and -q) are now accepted. #1612
• The ResultLog now prefers HOSTNAME environment variable value (if set) over the full qualified domain name of localhost. This makes it possible to disable an undesired DNS lookup, which happened on all tox invocations, including trivial ones - by hroncok #1615

Documentation

• Update packaging information for Flit. #1613

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
  

Commits

• 513cdc8 release 3.18.0
• a9ec661 Add alias "allowlist_externals" to "whitelist_externals" (#1601)
• c4ef11d Add setup.cfg formatting
• f3a063a Fix tty substitution to displays as code block (#1622)
• 3c10fd9 Specify the default value of parallel mode (#1620)
• 3de864a Merge pull request #1619 from tox-dev/release-3.17.1
• 681a094 release 3.17.1
• 7a65627 Fix tests when HOSTNAME is set, but empty string (#1618)
• 03bc093 Merge pull request #1617 from tox-dev/release-3.17.0
• 31e0bc6 release 3.17.0
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) - `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language - `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language - `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language - `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language - `@dependabot badge me` will comment on this PR with code to add a "Dependabot enabled" badge to your readme Additionally, you can set the following in your Dependabot [dashboard](https://app.dependabot.com): - Update frequency (including time of day and day of week) - Pull request limits (per update run and/or open at any time) - Out-of-range updates (receive only lockfile updates, if desired) - Security updates (receive only security updates, if desired)

[codecov[bot]]

Codecov Report

Merging #140 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #140   +/-   ##
=======================================
  Coverage   88.68%   88.68%           
=======================================
  Files          12       12           
  Lines         486      486           
=======================================
  Hits          431      431           
  Misses         55       55           

[dependabot-preview[bot]]

Superseded by #142.