factor

Author	SHA1	Message	Date
Daniel Ehrenberg	265fe6208f	Adding null? word to test if a set is empty	2010-04-17 16:25:51 -05:00
Daniel Ehrenberg	7074979745	Moving new-sets to sets	2010-02-26 16:01:01 -05:00
Daniel Ehrenberg	e43312d780	Moving new-sets and hash-sets to core	2010-02-26 11:01:57 -05:00