added 13 new functions including rect-x rect-y rect-width rect-clone rect-height equalize-hist, cascade-classifier cascade-classifier-load with examples and documentation for each also added new with-* macros in core.lisp and del-* functions in core.lisp
added 13 new functions including rect-x rect-y rect-width rect-clone rect-height equalize-hist, cascade-classifier cascade-classifier-load with examples and documentation for each also added new with-* macros in core.lisp and del-* functions in core.lisp