Made Changes conform to CPAN::Changes::Spec

Hi Matsuno-san,

I made the following changes to the Changes file:

* Added missing dates, which came from BackPAN
* made formatting consistent, mainly indentation, with a little bit of line-wrapping.

This is the 288th CPAN dist on my quest to get the Changes file updated to conform to CPAN::Changes::Spec, for 1% of CPAN. My final dist.

Thank you for your patience with all these pull requests :-)

Cheers,
Neil