*Improved: order fulfillment feature. Now AliExpress Order ID is saved in the appropriate order item.
*Improved: order synchronization feature. Now it's possible to get and update tracking data using the chrome extension. The extension checks when the tracking number is added by the seller on AliExpress, also it checks whether the tracking number has shipped or delivered state. The tracking numbers are saved in the appropriate order item.
*Added new option "Delivered Order Status". It sets the order status that should be used when all order's tracking numbers get Delivered state on AliExpress
*Changed option name "Tracking Code Order Status" to "Shipped Order Status". It sets the order status that should be used when all order's tracking numbers get Shipped state on AliExpress.
*Added: shipping cache
*Improved: system message refactoring
*Fixed: shipping price rules