Dice Instance Table
A dice instance inherits all of its methods from the dice class.
Dice_Instance = {
num = number,
faces = number,
sets = number, -- optional
bonus = number, -- optional
is_bonus_plural = boolean, -- optional (requires bonus)
rerolls = number, -- optional
is_reroll_plural = boolean, -- optional (requires rerolls)
minimum = number/nil, -- optional (nil results in class default (if any) )
}