* Add style guide for creating product template submissions.
* Some updates to TODO.md. (#270)
* Remove Meta nodes with deprecated product_url attributes.
- Add generic full-page templates. (This feature from 3.4 was missing)
- Also add generic half-page, quarter-page, and envelope templates.
- Add several more common envelope sizes to page-sizes.xml
- Qt print backend does not need pwg_size.
- Replace with pwg_class, to distinguish between ISO and NA sizes
- Reconciled capitalization style of product descriptions
- Reduced the number of unique product descriptions
- Started product template documentation
- Added credits file
Jaye Evins