Very good for on-line use (only) Rated 4 out of 5 stars

This add-on goes very fine with my TB 17.0.5 and Lightning 1.9, both in my office and at home. But not off-line ! . I found this last week during a conference when I launched TB without internet connection, and TB hanged badly, consuming a lot of CPU. After many trials I finally found a (the?) solution: just disabling "Provider for Google Calendar". It would be great to have this add-on working also for off-line use.

This review is for a previous version of the add-on (0.18).