tl_iso_product_collection field pid has been renamed to member
Different product availability check for frontend or in collection
Add model relation to tl_iso_product_collection.member
Product object does not need __isset, the model implements that
Check if product is in any page of the current site

Otherwise it should not be available in the current store
CS
Moved method to create gallery to the gallery model
Added closures to generate attribute or get gallery in collection
CS
Replaced minimum_quantity with a method in the product object
Re-sorted method and added some to the interface
Deleted some unnecessary methods
Minimum quantity is only available for advanced pricing
Removed the quick edit variant wizard

We now have full multi-edit support