small bugfixes
added ItemRebate ot OrderItem after switching to soap api version 108
ignoring SalesOrderProperties now on purpose since it is of no interest
updated TODO list
added empty AttributeValueSet DB scheme
updated TODO list
updated AttributeValueSet db scheme
updated TODO list
Merge branch 'feature/AddAttributeValueSetDBScheme' into develop
added new experiment GetAttributeValueSets
added support to request multiple AttributeValuesSets at once
Merge branch 'feature/ExperimentGetAttributeValueSets' into develop
added call by reference param AttributeValueSetIDs to processOrderItem to be able to hand back any found AVSI for later processing
added extraction of AVSI from SKU
added some TODOs
store found AttributeValueSets in db
Merge branch 'feature/ProcessAttributeValueIDs' into develop
modified SoapCall_GetAttributeValueSets class to give more verbose output
added soap call and request skeletons for GetItemsBase
streamlined code from unnecessary var/ref passing
added full qualified GetItemsBase request
perform basic response interpretation
added walking through pages
added DB scheme for ItemsBase
implemented storing of ItemsBase to db
Merge branch 'feature/ExperimentGetItemsBase' into develop