Log Message:
py-bump2version: import version 1.0.1

bump2version is a small command line tool to simplify releasing software by
updating all version strings in your source code by the correct increment. It
also creates commits and tags:

- version formats are highly configurable;
- it works without any VCS, but happily reads tag information from and writes
  commits and tags to Git and Mercurial if available;
- it just handles text files, so it's not specific to any programming language.

This will replace py-bumpversion, which is no longer maintained.