Each turn, a player repeatedly rolls a dice until either a 1 is rolled
or the player decides to "hold": If the player rolls a 1, they score
nothing and it becomes the next player's turn.
If the player rolls any other number, it is added to their turn total
and the player's turn continues.
If a player chooses to "hold", their turn total is added to their score,
and it becomes the next player's turn. The first player to score 100 or
more points wins.