Bugs in HandRange.fromCardPairs function

[eRaMvn]

Hi,

I think there is a bug in the fromCardPairs function. Here is the test code where I found the bug in version 0.10.0

Set<CardPair> test = HandRange.parse('JJ-4498s').cardPairs.toSet();
test.remove(CardPair.parse('4s4d'));
test.remove(CardPair.parse('4h4d'));
test.remove(CardPair.parse('4d4c'));
test.remove(CardPair.parse('4s4c'));
test.remove(CardPair.parse('4h4c'));
test.remove(CardPair.parse('4d4c'));
print(test);
//Output: {(Js, Jh), (Js, Jd), (Js, Jc), (Jh, Jd), (Jh, Jc), (Jd, Jc), (Ts, Th), (Ts, Td), (Ts, Tc), (Th, Td), (Th, Tc), (Td, Tc), (9s, 9h), (9s, 9d), (9s, 9c), (9h, 9d), (9h, 9c), (9d, 9c), (8s, 8h), (8s, 8d), (8s, 8c), (8h, 8d), (8h, 8c), (8d, 8c), (7s, 7h), (7s, 7d), (7s, 7c), (7h, 7d), (7h, 7c), (7d, 7c), (6s, 6h), (6s, 6d), (6s, 6c), (6h, 6d), (6h, 6c), (6d, 6c), (5s, 5h), (5s, 5d), (5s, 5c), (5h, 5d), (5h, 5c), (5d, 5c), (4s, 4h), (8s, 9s), (8h, 9h), (8d, 9d), (8c, 9c)}

HandRange parsed_test = HandRange.fromCardPairs(test);
print(parsed_test.cardPairs.toSet());
//Output:  {(Js, Jh), (Js, Jd), (Js, Jc), (Jh, Jd), (Jh, Jc), (Jd, Jc), (Ts, Th), (Ts, Td), (Ts, Tc), (Th, Td), (Th, Tc), (Td, Tc), (9s, 9h), (9s, 9d), (9s, 9c), (9h, 9d), (9h, 9c), (9d, 9c), (8s, 8h), (8s, 8d), (8s, 8c), (8h, 8d), (8h, 8c), (8d, 8c), (7s, 7h), (7s, 7d), (7s, 7c), (7h, 7d), (7h, 7c), (7d, 7c), (6s, 6h), (6s, 6d), (6s, 6c), (6h, 6d), (6h, 6c), (6d, 6c), (5s, 5h), (5s, 5d), (5s, 5c), (5h, 5d), (5h, 5c), (5d, 5c), (8s, 9s), (8h, 9h), (8d, 9d), (8c, 9c)}

Notice that we are missing (4s, 4h). I think something is wrong with HandRange.fromCardPairs() function

Thank you!