I just wanted to say to the Xcode dev team that I'm loving the new Debug Memory Graph in Xcode 8.
I just spent a week converting a very large (just shy of a million lines of OjbC) project to ARC and was fully prepared spend another week with Instruments looking for retain cycles, bad bridges, and whatnot.
But in the first few hours using the Debug Memory Graph, I think I've already identified and elminiated half of my memory management bugs. It's like they just jump up in front of you and say "fix me!"
Great job, and Thanks!