Changes for UNIVERSAL::isa
--------------------------

0.06  Fri Feb 24 06:47:14 UTC 2006
	- allowed for overridden can()
	- allowed backwards-compatible use of isa() to check reftype
	- added Changes and README files
	- revised internal code for readability
	- improved documentation slightly

0.05  Nov 07 2005

0.04  Sep 11 2005

0.03  Sep 05 2005

0.02  Jul 03 2005

0.01  Jun 30 2005
	- initial release