Version 1.1.0

- Fixes count bug where PHP runs out of memory
- Updated some count checks to empty for efficiency
- Added customer group to customers, orders, and carts
- Added sub_product_ids to products
- Added inventory collector
- Added refunded tax to order/items
- Added discount rules to orders and carts
- Added sub_product_ids to order/items and cart/items
- Added discount and discount refunded to order/items
- Added discount to cart/items
- Added attributes to order/items and cart/items
- Added options to order/item and cart/items