#3 Make event sets efficient

[Gary Hale]

Currently, as events are brought back up out of conditions, we use "addAll" to add the events to the parent condition. When we look to see if an event applies to a sitaution, we do a sequential search to determine if the event applies. We need to build an effecient data structure to gather events as they come up through the condition framework and an efficient way to determine if a set of events applies to a given situation.