Release 2023-01-18 (v0.3.1)

Something I threw together because I was sick of calculating this specific thing by hand, losing my results, and doing it again. I haven't made anything save to a text file or something more permanent yet, and there's no documentation because I'm lazy. Figure it out yourself, good luck!

In future I may or may not tack on more features, depends how fed up I get with this version.