Tweaks to Changes file needed for conformance with CPAN::Changes::Spec

Hi,

I've made some minor changes to your Changes file so it meets the spec in CPAN::Changes::Spec. I added some dates for early releases (taken from backpan), and it looks like 0.02 was never released, so I merged its one change into 0.03, since it looks like that's when it made it to CPAN :-)

Following this format means that various tools can more easily process your distribution automatically.

You can find out more about this at Brian Cassidy's [CPAN::Changes Kwalitee Service](http://changes.cpanhq.org),
which is where I saw your module listed :-)

Cheers,
Neil