Change Item 2, New Exception

Add this exception:

ArrivalTimeQueueOverflowException

This will be used to replace ResourceLimitError in the following text on p. 62 and in the fire() method on p. 182

If an arrival time occurs and should be queued but the queue already holds a number of times equal to the initial queue length defined by this then the fire() method shall throw a ResourceLimitError. If the arrival time is a result of a happening to which the instance of AsyncEventHandler is bound then the arrival time is ignored.