Move is_raise related checks from BetSize to BetSizeOptions
Make BetSizeOptions fields non-public
Rename BetSizeOptions fields (pluralize)
Additionally, this PR implements some serialization/deserialization (which probably belongs in parent PR but I'm lazy), and implements try_from_sizes and as_valid_bets that moves logic about valid bet sizes (versus raise sizes) out of BetSize
This is a PR to address #16
This PR addresses points in issue #16:
Additionally, this PR implements some serialization/deserialization (which probably belongs in parent PR but I'm lazy), and implements
try_from_sizesandas_valid_betsthat moves logic about valid bet sizes (versus raise sizes) out ofBetSize