Additional features

[ ] if end of expectations is approaching, add an error that forecasted are finishing
[ ] implement more complex recurrences based on https://dateutil.readthedocs.io/en/stable/rrule.html#rrule-examples
[ ] ensure recurrences are on business days

Logic

[ ] in `create_expected’, replace hardcoded EUR with operating curr
[X] Similar transactions must be within a certain range to be considered duplicates
[X] Create new transactions using amount in metadata, and amount in postings = 0, to allow duplicate the original transaction versus an actual one
[X] Create new transactions without the metadata