Hi everyone. I had forgotten to announce it here when I released these 2 version so doing it now to catch up, sorry about that.
They’re both about making the application work with the new Activity Stream based on Event Stream (we deprecated and remove the old Activity Stream) + adding the ability to delete inactive users. Several other new features have been added too to make spam cleaning simpler, especially related to the event stream. See https://extensions.xwiki.org/xwiki/bin/view/Extension/AntiSpam%20Tool%20Application for details.