Bump pip from 20.0.2 to 20.1.1

[dependabot-preview]

Bumps pip from 20.0.2 to 20.1.1.

Changelog

Sourced from pip's changelog.

20.1.1 (2020-05-19)

Deprecations and Removals

• Revert building of local directories in place, restoring the pre-20.1 behaviour of copying to a temporary directory. (#7555)
• Drop parallelization from pip list --outdated. (#8167)

Bug Fixes

• Fix metadata permission issues when umask has the executable bit set. (#8164)
• Avoid unnecessary message about the wheel package not being installed when a wheel would not have been built. Additionally, clarify the message. (#8178)

20.1 (2020-04-28)

Process

• Document that pip 21.0 will drop support for Python 2.7.

Features

• Add pip cache dir to show the cache directory. (#7350)

Bug Fixes

• Abort pip cache commands early when cache is disabled. (#8124)
• Correctly set permissions on metadata files during wheel installation, to permit non-privileged users to read from system site-packages. (#8139)

20.1b1 (2020-04-21)

Deprecations and Removals

• Remove emails from AUTHORS.txt to prevent usage for spamming, and only populate names in AUTHORS.txt at time of release (#5979)
• Remove deprecated --skip-requirements-regex option. (#7297)
• Building of local directories is now done in place, instead of a temporary location containing a copy of the directory tree. (#7555)
• Remove unused tests/scripts/test_all_pip.py test script and the tests/scripts folder. (#7680)

Features

• pip now implements PEP 610, so pip freeze has better fidelity in presence of distributions installed from Direct URL requirements. (#609)
• Add pip cache command for inspecting/managing pip's wheel cache. (#6391)

... (truncated)

Commits

• 8356bc5 Bump for release
• bfe6336 NEWS: in-tree builds revert is a removal, not bugfix
• ab6ac9d Merge pull request #8221 from pradyunsg/revert-in-place-builds
• 4a063b7 Merge pull request #8167 from pradyunsg/drop-list-parallelization
• a526f93 Merge pull request #8180 from sbidoul/wheel-absent-warning-sbi
• c5150d4 Merge pull request #8166 from deveshks/fix-generated-file-mode
• c513c72 Merge pull request #8173 from hugovk/document-pip-cache-dir
• 5ce941c Bump for release
• 7090f80 Update AUTHORS.txt
• 371d6f5 Merge pull request #8157 from pradyunsg/cache/ignore-require-venv
• Additional commits viewable in compare view

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[coveralls]

Coverage remained the same at 42.065% when pulling a660a13 on dependabot/pip/pip-20.1.1 into 10a4d82 on master.

[dependabot-preview]

Superseded by #452.