Adds campanus house system.
Works great for both northern & southern hemisphere. Also should work for both northern & southern circumpolar (arctic circle + Antarctica), though this was harder to test because most astrology sites either didn't allow me to do these or the results were "northern hemisphere" results instead of "northern circumpolar" results (circumpolar results have tiny & massive houses).
I'm fairly confident in the circumpolar accuracy however since I used "Dividing the Heavens" by Leonard Williams to assist with implementation and was able to verify with the examples in the book.