Oh wow, I did not expect not only that many interesting changes, but also that many which seem actually specifically useful to me - very cool to read!
I love kitty, have used it for a long while now and pretty happy, except for that one thing about ssh xterm - but even that is mostly minor.
Really cool to see such active development of an already perfectly capable and working software.
I've had so many issues with SSH that I ended up ghosttying kitty.
I have the same SSH qualms. I still use it because there's not much better for what I need.