printinvoice.pl doesn't send the streetnumber to the invoice template, which some libraries might want to use there. Addresses for these libraries can never be made complete without it (yes, they need a custom template to use it) I realise that by default, we probably won't use the streetnumber in the invoice template, but it feels strange to omit it when we send the rest of the main address.
older version, it's ok in newer versions.