Reformat change log as per CPAN::Changes::Spec

Hi,

I've edited the change log file to follow `CPAN::Changes::Spec` format (the dates were taken from [BackPAN](http://backpan.perl.org/)). I've also renamed the file to Changes.

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/).

Cheers,
Sergey

PS: I'm doing this because I'm on a quest to help to improve CPAN:

> http://questhub.io/realm/perl/quest/51f0337718ba7d3959000086

If you decide to update [your other dists](http://changes.cpanhq.org/author/KARASIK), feel free to log them in comments on the quest -- every dist helps!