[GNC] Online Currency Exchange Rates

[John Ralls]

We got a bug report, https://bugs.gnucash.org/show_bug.cgi?id=798599, this morning reporting that currency exchange rates aren't working.

After a bit of fiddling I got an intelligible error message:
  Thank you for using Alpha Vantage! This is a premium endpoint. You may subscribe to any of the premium plans at https://www.alphavantage.co/premium/ to instantly unlock all premium endpoints.

The cheapest one is $50/month. I don't think anyone here will find that attractive. Finance Quote offers three other sources for exchange rates but it will take a bit of work on our scripts to make that accessible to GnuCash. In the meantime anyone needing currency exchange rates will have to get them from the web and create prices manually.

Regards,
John Ralls