Dear all. I am sad to inform you that today Krzysztof https://www.facebook.com/Halibutt?fref=gs&dti=1535273526719763&hc_location=group (user:Halibutt) has passed away.
You may remember him from his ideas regarding new methods of teaching Wikipedia editing:
https://outreach.wikimedia.org/wiki/Education/Warsztat_idealny/en
There is a memorial page on Polish Wikipedia. You can leave your condolences there and we will give them to Krzysztof's family:
https://pl.wikipedia.org/wiki/Wikipedysta:Halibutt/Ksi%C4%99ga
Cheers,