Release 2022-06-02

In order to correctly bill multi purpose voucher you can now send "postTaxItems" along with your purchase items - indicating a reduction in the 'amountDue' of the item. This reduction however does affect the tax amount you need to provide to your tax authority.
'ItemExtras' and 'PostTaxItemsExtras' can now be viewed in the webportal.
Fixed a bug where not all 'BillableItems' of a contract were created that has:
-> billing at the end of the billing period
-> without being synced to full months
-> and the contract was created with a start date several months in the past.