Gets the multiplier used to calculate the xp of the source.
This is used to allow the xp value to be in a more readable format.
For example, a per_cm statistic would have a multiplier of 0.01 for the configured xp to be in meters.
Returns:
The multiplier
getMinimumIncrease
intgetMinimumIncrease()
Gets the minimum value the statistic must increase by for the source to give xp.
If the statistic increases by less than this value, it will still be accounted for in
the next time XP is given.