Ability to set offset on pagenumber

Hi Chris, when you've got time please take a look here.
It allows to create an offset on page numbering so that instead of your title page always being 1 you can have it as 0 with hidden number and than start displaying pagenumbers from 1 on content.

This said it only covers pdf:pagenumber and I think the same thing should be added to pdf:pagecount so you don't end up in a situation of last page being 33/34.