Add low ace straight support to get_poker_hand (#13)

Adds Hand class and tag 3.1b1 (#8)

Fixes #5 by adding bridge ordering for Suit
Fixes #6 by adding Value.Joker
Fixes #7 by adding Hand class

Update to v3.0.0 (#4)

Fixes high card calculation

Fix poker calculation and add tests

Add tests and publish (#3)