Finish deprecating the multiple versions of the same functions Ensure we use better Python 3 idioms everywhere
- https://jidanni.org/geo/maidenhead/index.html
- https://earthpoint.us/convert.aspx 12-character Maidenheads???
- https://k7fry.com/grid
- http://w8bh.net/grid_squares.pdf
- https://en.wikipedia.org/wiki/Maidenhead_Locator_System
- https://en.wikipedia.org/wiki/Geohash#Similar_indexing_systems
- https://en.wikipedia.org/wiki/Geographic_coordinate_system#Alternative_encodings
- https://hamradiooutsidethebox.ca/2025/04/09/what-3-words-maidenhead-grid-squares
- https://en.wikipedia.org/wiki/What3words#Proprietary
- https://geohash.es