No results if date range includes the dates where the fund is not issued yet

[egemen-candir]

Hi,

Thanks for this crawler, it's really helpful.
If you try a date range which includes dates where a fund has not been issued yet, it won't return any results. I think this is about TEFAS limitations as well. You need to know the exact TEFAS issue date for each fund you're pulling the data and adjust it.