Ryan Schneider authored Jun 14, 2018 and Péter Szilágyi committed Jun 14, 2018

* debug: Use pprof goroutine writer in debug.Stacks() to ensure all goroutines are captured.

* Up to 64MB limit, previous code only captured first 1MB of goroutines.

* internal/debug: simplify stacks handler

* fix typo

* fix pointer receiver