UPGRADE-1.9.md

UPGRADE FROM v1.8.X TO v1.9.0

1. Add new parameters, new access control configuration and reorder it:

       parameters:
   +       sylius.security.new_api_user_account_route: "%sylius.security.new_api_shop_route%/account"
   +       sylius.security.new_api_user_account_regex: "^%sylius.security.new_api_user_account_route%"
   
       security:
           access_control:
   +           - { path: "%sylius.security.new_api_user_account_regex%/.*", role: ROLE_USER }
   -           - { path: "%sylius.security.new_api_shop_regex%/.*", role: IS_AUTHENTICATED_ANONYMOUSLY }
               - { path: "%sylius.security.new_api_route%/shop/authentication-token", role: IS_AUTHENTICATED_ANONYMOUSLY }
   +           - { path: "%sylius.security.new_api_shop_regex%/.*", role: IS_AUTHENTICATED_ANONYMOUSLY }
       ```
   

2. Unified API registration path in shop has been changed from /new-api/shop/register to /new-api/shop/customers/.

3. Identifier needed to retrieve a product in shop API endpoint (/new-api/shop/products/{id}) has been changed from slug to code.