Switch part of our Metadata collection to the GitHub PluginBundle

Signed-off-by: Pedro Melo <melo@simplicidade.org>
Tweak SUPPORT section of our Pod:

 * include repository text;
 * the bugs section doesn't require an email address anymore: Github
   issues don't have one AFAIK;
 * include the metacpan website.

Signed-off-by: Pedro Melo <melo@simplicidade.org>
Default for skip_prereqs set to ^t::

I use this namespace for my packages using during the test phase, so
just skip them.

Signed-off-by: Pedro Melo <melo@simplicidade.org>
Update changes to release 0.012

Signed-off-by: Pedro Melo <melo@simplicidade.org>
v0.012

        * New default for skip_prereqs: '^t::'
        * Tweak SUPPORT section of our Pod sections
        * Switch part of our Metadata collection to the GitHub PluginBundle
        * bug tracker set to Github issues by default now