empty node error fix in xml
INT-553, INT-554 Case A and C
INT-555 case E
INT-556 case mixed orderrows
INT-558 case ordertype vat missmatch
fixed UpdateOrderRowsRequest
INTG-559 updateOrderrows rounding case A
INTG-560 updateOrderrows rounding case C
INTG-561 updateOrderrows rounding case E
INTG-562 updateOrderrows rounding case mixed orderrows
INTG-563 updateOrderrows rounding case ordertype missmatch
INTG-564 queryOrderRow rounding Response
INTG-570 getPaymentPlanParams if only one campaign
Merge branch 'feature/sprint5' into develop
bump to version 2.2.7
Merge branch 'develop' of github.com:sveawebpay/php-integration into develop