Add containsStraight function.
Add test for containsStraight.
Rearrange flush tests to avoid issues with asynchronous tests.
Rearrange inRange test to avoid issues with asynchronous tests.
Further adjust flush tests to avoid issues with asynchronous tests.
Adjust post-flop bet tests to avoid issues with asynchronous tests.
Fix stupid suited inRange bug :)
Fix asynchronous issues with inRange test.