wip/git-who 1.2 NetBSD

git-who is a command-line tool for answering that eternal question:

> Who wrote this code?!

Unlike `git blame`, which can tell you who wrote a _line_ of code, `git-who` tells you the people responsible for entire components or subsystems in a codebase. You can think of `git-who` sort of like `git blame` but for file trees rather than individual files.