Plugin versions are now on the properties.
Removed the interface for modified values.
Removed the ValueHandlers container interface.
Moved the events to their packages. Removed the interval even thrower
interface.
Removed ValueHandler even throwers interfaces.
Moved events to the API, and reorganized the event classes.
Moved exceptions to the API.
Sorted the utilities package.
Modified the roller classes. Now the dice roller now uses an interval
roller.