Dist enhancements

Hi,

I've reformatted your Changes file according to the spec in `CPAN::Changes::Spec`. I got the dates of releases from [BackPan](http://backpan.perl.org/authors/id/K/KA/KAZUHO/).

Following this format means that various tools can more easily process your distribution automatically.
I also added a link to this repository to the Makefile.PL.

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,
Sergey

PS: I'm doing this because I'm on a quest to help improve CPAN. Read more about [the quest](http://questhub.io/realm/perl/quest/51f0337718ba7d3959000086) at [Questhub](http://questhub.io).
If you decide to update your other dists, feel free to log them in comments on the quest -- every dist helps!