Add date_format arg to specify format string for dates

[kevinjfoley]

Tested against fixtures/checking.ofx and fixtures/paypal.csv with:

fixtures/checking.ofx
fixtures/checking.ofx -y "%Y-%m-%d"
fixtures/paypal.csv -a "test"
fixtures/paypal.csv -y "%Y-%m-%d" -a "test"

[egh]

Thanks very much @kevinjfoley ! This is great. Do you think we need the full date-format code, or would simply allowing - or / satisfy your use case? I know ledger allows any date format, but I'm curious how many people use non-standard date formats.

[kevinjfoley]

Thanks very much @kevinjfoley !

My pleasure!

Do you think we need the full date-format code, or would simply allowing - or / satisfy your use case?

My only use case for this is to be able to use - in my dates instead of / so some kind of option like date-separator would meet my needs.

However I figure allowing a full date format code gives more flexibility, some people may prefer %m/%d/%Y which this would allow for. Is there a downside to allowing a full code that
you're worried about?

[egh]

@kevinjfoley It just seemed a little more complicated, but it does add the additional flexibility, so that's fine with me. Thanks again!

[egh]

Looks good to me!