Modified Changes file to satisfy CPAN::Changes::Spec

Hi,

I've tweaked the format of your Changes file, so it now matches the format in CPAN::Changes::Spec. The main change was looking up the dates of past releases on backpan, and adding them in.

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