Support fixed day of month
This adds support for specifying a fixed day for the direct debit per #93 (closed) in the case of Monthly/Yearly direct debits.
It does not support specifying the month - that could be added in the future.
This adds support for specifying a fixed day for the direct debit per #93 (closed) in the case of Monthly/Yearly direct debits.
It does not support specifying the month - that could be added in the future.