On Tue, Jun 2, 2015 at 9:33 AM, Richard Hughes <hughsient@gmail.com> wrote:
If i was to have my time again, I'd say required, but I don't want to
start ignoring AppData files that were once valid.

Thanks for the clarification and the quick response.  I think it would be a good idea
to update the specification page and clearly indicate "required" instead of "should".
That would clear up some confusion and encourage people to do the right thing
going forward.  Relaxed validation would continue to allow the older files to pass.