Features:
- Added 'updated_at' to product feed
Improvements:
- Move price logic to separate service class
- Transfer VatID to shipping address if company is the identical
- Add Channable discount total to the invoice
- Apply channel name to discount label
Bugfixes:
- Remove Product Wee Tax (FPT) after recalculate price #231
- Get SKU form GTIN when creating credit memo from grid #233
- Fix loading of parent categories
- Fix tier price calculation when using discount
- Fixed feed issue with 'use_default' values (thnx @VincentBean)