Good talk. Lots of information, presented very quickly, but clearly.
Great tutorial and really hands on.
Most tutorial is too much talk and too less handsom. I really learned something!
I would only be interested in the compatibility charts when an API is interesting for me to use, adding them is nice, discussing them seems like a waste of time. Slow down a bit, you seemed very nervous and became much nicer to listen to at the end of the talk.
I really enjoyed your talk, well structured, informative. Tanks!
This was a very good talk with many examples that were well organized. Stephan has a very good speaking presence and handles the flow of the talk well.
My only recommendation for improvement would be to try to focus the code on slides a bit. The size of code on slides was ok, but perhaps highlighting the more important lines would help.