Fixed a small bug from round_distributeDeck() and now this function returns the errors returned of round_distributeCard().
Added the tests for round_distributeDeck().
Modified round_addTrump(). Now the parameter trump is pointer to pointer to the card which will be the trump.
Modified the declaration of the function round_addTrump(). The parameter trump is pointer to pointer to card. Fixed the documentation of the function round_addTrump().
Fixed the tests of the function round_addTrump() after what was modified the declaration of the function.