0.04	Saturday 28th January, 2005
	Fix the automatic backend selection to never pick ::Null if
	there's a better one available (Tatsuhiko Miyagawa)

0.03	Friday 18th February, 2005
	Fix the null backend

0.02	Friday 18th February, 2005
	Add a Null backend, so we don't blow up if people didn't
	fricking install one.

0.01	February 21st, 2004
	Initial CPAN release