* Rename orders controllers and data store to order stats
* Add orders data store and controller
* Add coupon, product, and status filters
* Add customer type query filter
* Add extended info for products and categories
* Bump API namespace to v4
* Add missing schema properties
* Set default customer_type and extended_info params
* Add orders endpoint tests
* Only use one JOIN if both excluded and included queries are used
* Optimize query calls to get product and category data
* Split product and category fetch and limit to product_cat taxonomy
Joshua T Flowers
Jeff Stieler
Peter Fabian