Holy cow, that’s alot of great stuff. Thanks for the hard work and the huge improvements going into this version, while helping us all to keep the lights on as you were rolling it out. It’s deeply appreciated. 
If I were to have to vote for my favorite new improvements, it would be a tossup between the lazy loading of images (of huge benefit to our members in low-bandwidth places) and the improved search (which makes the 
even more useful - is that even possible!?).