The toolkit gets better every week

Adding your classes to Google Calendar now works. In Add to my calendar, the Google Calendar button copies your calendar link and opens Google Calendar's From URL page: paste the link there and choose Add calendar. If you added a calendar to Google before this update and it stayed empty, remove it from Google Calendar and add it again this way.

A class address written over several lines now shows as one line in your calendar, so your calendar app can open it in a map.