temporary rename

I can't rename CHANGES to Changes on a Mac, due to case-insensitive filesystem
Renamed CHANGES as Changes
Reformatted as per CPAN::Changes::Spec
Switched to Dist::Zilla
Added a bunch of alternatives to SEE ALSO
Decided to start with a developer release

There are 17 dists using Exporter::Easy on CPAN, and while I don't think I've
broken anything, better to be safe than sorry (experience hard won, with
a release of Perl::MinimumVersion).
Added github repo to pod
Prep for non-developer release
Fixed typo in pod