Proposed commit log message:
```
[NEW PORT]: devel/py-bumpversion: Version-bump your software with a single command
A small command line tool to simplify releasing software by updating
all version strings in your source code by the correct increment.
WWW: https://github.com/peritus/bumpversion
Reviewed_by: koobs
Approved by: koobs (mentor)
Differential_Revision:
```