* Add expires column to table
* Use core class if it exists.
* Add Exception class
* Update for currcurrency
* Update tests to handle exception
* Add back legacy stock handling
* Update comments
* Audit atomic block labels
* Add summary, descrtiption, and short description to API and use for summary block
* Add summary to cart item api
* Respect short description
* Tweak label of summary block
* Revert product rating label
* One description vs 3
* Update sample content with more appropriate values, and match in cart items sample
* Move summary generation to class
* Tests
* Prevent extending `ProductSummary`
* Tweak $paragraph handling
* More accurate word counting
* add tear down for filter
Mike Jolley