Incorrect version reported by `pyenv virtualenv --version`

[darkfishy]

Description

pyenv virtualenv --version from release 1.2.2 incorrectly reports self version as 1.2.1.

This is a packaging issue. Last time self version was updated in 7a6ea24, however, since then 1.2.2 package has been released.

Prerequisite

• Make sure your problem is not listed in the common build problems.
• Make sure no duplicated issue has already been reported in the pyenv-virtualenv issues. You should look in closed issues, too.
• Make sure you are not asking us to help solving your specific issue.
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• Make sure your problem is not derived from packaging (e.g. Homebrew).
  • Please refer to the package documentation for the installation issues, etc.
• Make sure your problem is not derived from other plugins.
  • This repository is maintaining the pyenv-virtualenv plugin only. Please refrain from reporting issues of other plugins here.

[ushuz]

Fixed in #471