It was 3.6 for me, I still miss it.
To be honest, I have been completely overwhelmed by the modern web, ads and cookie warnings are just giving me anxiety, and I mean real physical anxiety. I will go back to my roots, my tty only experience is getting better and better[1]. When I patched the kernel to make the cursor non blinking block, I got such joy, I felt I was a kid again.
Great news that slack is still around! It gives me hope.