• Upgraded vendored libraries
• Fixed bugs
• Improved performance
• Added feature: inspect pip's wheel cache with the pip cache command, and show the cache directory with the pip cache dir command

Note that this is the last pip release that supports Python 2. This package will be deprecated with pip release 21.0 in favor of the python3 package, which bundles the Python 3 version of pip.

A bit of superficial testing shows that everything seems fine.

$ pip install --user Django
$ pip uninstall Django
$ pip cache info
$ pip cache list
$ pip cache dir