Uses Goodread's list of author's books, filtering out the books that are already in the user's library.
Requires the Goodreads dependency and API information.
I've been unable to reproduce the issue on macOS with Python 2.7/3.6 and Fedora with Python 2.7, but if it happens for others, then it's worth the change.
Requires the "goodread" module (added to optional-requirements.txt) and an API key
Retrieves Goodreads author information and displays their photo and "about" text
