[Pr.BarnArt]

@Bolligske thanks for testing.
Which title/author was not found?

The non valid isbn-number was an issue for creating the plugin.
Although it is a valid number, parsing it with check-isbn it gives a false result.
With a false result I could also not offer a cover.So in this version I skipped the check_isbn function. I have to look how to clear this issue.

thanks again for your comment.