1. It is now feasible to create orders with only product variant id, instead of a whole list of options, specified. This works for Shopify, Magento, PrestaShop, and WooCommerce.
2. The tax.class.info method has been added for Magento, WooCommerce, Shopify, PrestaShop, OpenCart, and Bigcommerce.
3. The order.shipment.list method is now supported for WooCommerce, PrestaShop, 3dcart, X-Cart, and CS-Cart.
4. It is now possible to return Magento discounts as a separate array.
