Unrequested installation of Supernova
Why was the Supernova version installed without my permission? I wasn't ready to do it yet, so it's quite irritating. I have always had the option set to ask before installing updates. This happened to my wife too with 102 and the sudden introduction of Cardbook caused major problems for her. For a long time I thought that I had done it accidentally, but now I don't think so. I had been holding back on updating her version until all of the extensions she used were available.
Opaite Mbohovái (1)
TB won't update automatically if you have it set to ask before upgrading, but some security apps like Norton Software Updater will override that setting and update automatically.
There is a Cardbook for TB 115:
https://addons.thunderbird.net/en-us/thunderbird/addon/cardbook/versions/