Disable fixed fields in product type configuration
Dropped the pre-2.0 upgrade script
Disable the rules module, it does not (yet) work in 2.0
There is no serialized surcharges data anymore
Fixed wrong method name
Fixed missing interfaces
Renamed tl_iso_product_collection_surcharge.add to addToTotal

More obvious and prevents SQL issue
Added missing database field
Method cannot return a collection, build array from models
Copy surcharges from cart to order on checkout