Updates python version in pyproject.toml and removes requirements.txt

[Rdbaker]

Purpose

This change:

• updates the versions of the python requirement to align with PUDL, so that this module can be installed
• removes the unused requirements.txt file, since we have 3 other dependency management files in this repo (correct me if we want that, but it wasn't referenced in the README at all)

What the code is doing

updating the python version in pyproject.toml

Testing

I will test this change by trying to install it in Greta

Where to look

n/a

Usage Example/Visuals

n/a

Review estimate

5 minutes

Future work

none for this change

Checklist

• [x] Update the documentation to reflect changes made in this PR
• [x] Format all updated python files using black
• [x] Clear outputs from all notebooks modified
• [x] Add docstrings and type hints to any new functions created

[Rdbaker]

tested that it was able to be installed in Greta

[grgmiller]

Right now the target branch is main - if we test integration using this branch and everything works, we can merge directly into main and do a v0.3.2 release of OGE; otherwise, we probably want to first merge into development in case there are any other patch changes we need to make during the testing process for integration.

[grgmiller]

If we update the version, this also needs to be updated in the CITATION.cff file along with the release date.

[Rdbaker]

If we update the version, this also needs to be updated in the CITATION.cff file along with the release date.

why are we using both CITATION.cff and pyproject.toml to specify the version?

[grgmiller]

why are we using both CITATION.cff and pyproject.toml to specify the version?

I think they serve different purposes. the citation file is to help with the citability for academic purposes, so the version number is specified there as well. https://citation-file-format.github.io/