> Stack traces are desperately needed to give errors context, and I was very disappointed to see that proposal dropped from Go 1.13. At the same time, I'm hesitant to use xerrors in production code because it's likely to change rapidly in the future.

By the way what's left of all the "Go 2" proposals? "generics" look like they are in limbo and so is the "try/catch" proposal. Has anything been implemented yet?