colesbury/nogil-3.12-final

Issues

• Advice for Preparation

  #5 opened a year ago by ctismer
  4

• Rebase checklist

  #1 opened a year ago by colesbury
  0

• `f30d8d8f50a` Add pyatomic.h (pull `pyatomic.h` and related from CPython main)

  #2 opened a year ago by colesbury
  2

• `4584be59501` parking_lot: add mutexes and one-time notifications

  #3 opened a year ago by colesbury
  0