Openpos - WooCommerce POS 8.3.0

- Speedup download product
- Improve admin pos page
- Add shipping icon for shipping order at order list

- Update variation cart item / table item
- Improve speed download product list
- fixed bug report by customers

- Update variation cart item / table item
- Improve speed download product list
- fixed bug report by customers

- fixed bug report by customers
- improved code , ui

- reorder payment method , shipping method
- fixed bug report by customers
- improved code , ui

- fixed bug report by customers
- fixed clear takeaway
- add feature auto update plugin

- fixed bug report by customers
- fixed clear takeaway
- add feature auto update plugin

- fixed bug with woocommerce bundle product

- fixed bug report by customers
- fixed clear takeaway
- add feature auto update plugin

- fixed bug report by customers
- fixed all security issues