Progress on Characters

Characters can now roll dice. There are six dice total. Dice currently
give + 10 of the stat the face represents. Dice can be rolled 3 times.
Between Dice rolls, individual dice may be clicked on to be selected as
reroll dice. Attack SwordStrike is new attack. It requires 3 combat dice
to be used. If swords strike is used, the combat dice will not give
their bonus to combat stat. Game is now unbalanced. Dice rolling has
small bugs. Need to implement rest button.