Fix decimal number recognition

lib/invoice/db/invoices.py

@@ -72,7 +72,7 @@ class InvoiceData(Data):
     _fields = ["issued", "due", "delivered", "paid", "payment", "advance", "translate"]
     _multivalue_fields = ["itemheading", "item", "address", "note"]
     _date_regex = re.compile(r"^(\d{4})-?(\d{2})-?(\d{2})$")
-    _item_regex = re.compile(r"^([^|]*)\|(-?\d+)\|([^|]*)\|(-?\d+)$")
+    _item_regex = re.compile(r"^([^|]*)\|([-+]?\d*\.\d+|\d+)\|([^|]*)\|([-+]?\d*\.\d+|\d+)$")
     _number_template = "{year}{number:03}"
 
     def _parse_date(self, date):