initial commit, first unit test
adding ability to add cards to hand, and get total value of hand (might be card-game specific, so something to make overrideable in a BlackJackHand class?).  Creating our card domain object and making it responsible for returning the value of the card.  Also creating enums for the suit and face of each card
fleshing out the rest of the card face values and testing each one.  Replacing individual card face value tests with a single card face value test that runs a dictionary of expected values and reports all failures at once.   Adding the rest of the card suits, too.
finishing hand scoring for now; thinking of splitting out card domain from blackjack domain for reusability between other game types