Watches the board for a change, waiting until any cards turn face up or face down,
are removed from the board, or change from one string to a different string.
Returns
the updated state of the board from the perspective of playerId, in the
format described in the ps4 handout
Watches the board for a change, waiting until any cards turn face up or face down, are removed from the board, or change from one string to a different string.
Returns
the updated state of the board from the perspective of playerId, in the format described in the ps4 handout