Added Volume based shipping calculator
Removed duplicate route `sylius_api_product_variant_delete`
Merge pull request #2212 from steffenbrem/feature/bug-fix-api-product-variants

Removed duplicate route `sylius_api_product_variant_delete`
Fix some CS issues
Merge pull request #2213 from stloyd/bugfix/cs

Fix some CS issues
Merge pull request #2210 from antonioperic/addingVolumeForShipping

Added Volume based shipping calculator
cascade-all for billing address preventing deletion of orders and cart resulting integrity constraint violation
Merge pull request #2217 from sudent/fix-order-billing-address

Change billing address mapping to cascade-persist