Squashed 'plugins/pyenv-pip-migrate/' content from commit a3bef84

git-subtree-dir: plugins/pyenv-pip-migrate
git-subtree-split: a3bef84440768fbafadb4108668ef98bfab033a5
Merge commit '2e96d163ba3e0766b3485e07325e638af18b6d8e' as 'plugins/pyenv-pip-migrate'
Squashed 'plugins/pyenv-pip-rehash/' content from commit 9b2fed9

git-subtree-dir: plugins/pyenv-pip-rehash
git-subtree-split: 9b2fed957265b94b8ba682635b0fb24030f37ab7
Merge commit '8a3de90612620c24f34aacec2364615b079d2485' as 'plugins/pyenv-pip-rehash'
Squashed 'plugins/pyenv-virtualenv/' content from commit 5033c3b

git-subtree-dir: plugins/pyenv-virtualenv
git-subtree-split: 5033c3ba0d29c052214a9d1a5b5d698997b16a49
Merge commit 'd9f6d2f19c99fa5787beeeb5648ce03e6d10f029' as 'plugins/pyenv-virtualenv'