factor

Author	SHA1	Message	Date
Slava Pestov	33d3761314	classes.tuple.change-tracking: fix using line in tests	2009-08-01 01:25:13 -05:00
Joe Groff	06eeedcb4c	change-tracking-tuple class. subclasses will have a "changed?" slot that gets set to true when any slot is modified	2009-07-31 21:48:17 -05:00