No feedback is given when values in an iframe are not converted #13
Description
Due to cross-domain security restrictions you can't manipulate the content of an iframe on another domain, so we can't convert the prices and times. However, you can read the contents, so we could still check if there are prices and times within an iframe, and show a message to the user saying that they could not be converted.
Optionally also have a link to open the iframe's url in a new tab so that it can be converted there. This might not be the best idea, most stuff in iframes would look weird on its own.
Also, currently the extension is ignoring all iframes, but I'm pretty sure you can manipulate the DOM of iframes on the same domain as the parent page, so if there's a demand for it we could add support for this.