An implementation of Bruce Schneier's Solitaire.
Original specifications: https://www.schneier.com/academic/solitaire/
Description and review: https://alicegg.tech/2020/01/03/solitaire.html
DO NOT EVER USE THIS IN A PRODUCTION SYSTEM
python -m solitaire [encrypt/decrypt] [key] [text] [--verbose/--pretty]
Example:
solitaire encrypt FOO ABCDE -> IUJCY
solitaire decrypt FOO IUJCY -> ABCDE
The verbose and pretty flags allow you to visualize the state of the deck, using either numbers or unicode cards.