fix: date format wasn't getting set during bean-file

beancount_reds_importers/libreader/csvreader.py

@@ -68,14 +68,14 @@ def initialize_reader(self, file):
                 # TODO: move out elsewhere?
                 # self.currency = self.ofx_account.statement.currency.upper()
                 self.currency = self.config.get('currency', 'USD')
-                self.date_format = '%m/%d/%Y'  # TODO: move into class variable, into reader.Reader
                 self.file_read_done = False
             # else:
             #     print("header_identifier failed---------------:")
             #     print(self.header_identifier, file.head())
 
     def file_date(self, file):
         "Get the maximum date from the file."
+        self.initialize(file)  # self.date_format gets set via this
         self.read_file(file)
         return max(ot.date for ot in self.get_transactions()).date()