Added an extension to allow rendering of integration objects in a Jinja2 template.
Revert "Added an extension to allow rendering of integration objects in a Jinja2 template."

This reverts commit 4bd903e2f531672c930f9ebac44ac1a76ececab0.
Added a whole host of new allowable fields for multiple item processing. Also changed field name matching into a regex for ease of maintenance and efficiency.
Merge pull request #80 from Scotts-Marketplace/multiple-items

Added new allowed fields for posting multiple items to PayPal