Add automated testing for pytest through GitHub Actions

[d33bs]

This PR adds automated testing for pytest through GitHub Actions on PR and push to the main branch as a prerequisite of #52. These tests have a chance of not running on this PR due to this being my first contribution to this repository (a GitHub security constraint). I've attempted to test this workflow as best as possible (manually, as attempting to use act resulted in errors related to actions/setup-python#401).

While I was working through this I noticed there was no CONTRIBUTING.md or CODE_OF_CONDUCT.md. I've added these with some template information that has been slightly modified to meet the needs here.

Please don't hesitate to let me know if you have any questions - look forward to any feedback you may have!

Closes #53

[miltondp]

Fantastic, @d33bs! Thanks for adding those missing files with the guidelines for contributing and the code of conduct. They look great. I wonder if we should enable Discussions in this project.

I'm having some internet issues on campus, so I'll try to post this comment for now and continue later.

[cgreene]

Can we add a license here? Re: #58 - somewhat time sensitive (this week would be great) as we're trying to wrap up the final progress report for this grant.

[miltondp]

Yep, we can definitely add a licence. @d33bs could you pick one suggested by Casey here? The 3-clause BSD sounds like a good option.

[d33bs]

Sure thing @miltondp ! I noticed that the setup.py already includes a license mention: BSD-2-Clause Plus Patent. Should we plan to change from that license to the BSD-3-clause, or retain the BSD-2-Clause Plus Patent?

[miltondp]

Let's use what Casey suggested: BSD-3-clause. We might want to create another PR with the licence change and merge it quickly, so we don't rush things in this PR. Thank you, Dave!

[d33bs]

Thanks @miltondp and @cgreene for taking a look at this PR, thank you @falquaddoomi for the review approval! Merging this in now.