Platform-Agnostic Testing

We should consider porting our testing setup/run/checking/teardown scripts from bash-based, to python-based so they work cross-platform (looking at you `apt-get`).

- Figure out how to move/find/install things on each platform via python super libraries (`import *`)
- [Robot-framework](https://robotframework.org/)? -Reid
- Cheese windows by using [git bash](https://gitforwindows.org/)? -James
- Git is already a requirement of the project
- It's built on mingw..

Start by inventorying the existing Bash-based setup, run, checking, and teardown scripts; the issue does not name their files or entry points. Review the Git requirement and the proposed Python and Git Bash alternatives, then define completion as an equivalent testing workflow that works across platforms.

Written by the indexing model from the issue text.