First mode, compiles
getCost for Treat constraint enumerator is fast now if constraint has mailbox content
Removed a bug with PParameters and PParameterNames
Removed PParameter, replaced with String - PParameter is magic?
Implemented the IndexDelta filter: only appropriate deltas got from model
Added ModelDelta delta-type to support multiple model changes
Refactored feature listeners: now uses IQbase change aggregator, and optimized code duplications
Refactored again the whole model change delta process methodology - enoigh of this place, theres no work here
Extra check to save time
Fixes in treat drot