* origin/master: (113 commits)
  bpo-41773: Raise exception for non-finite weights in random.choices().  (pythonGH-22441)
  bpo-41873: Add vectorcall for float() (pythonGH-22432)
  bpo-41861: Convert _sqlite3 PrepareProtocolType to heap type (pythonGH-22428)
  bpo-41842: Add codecs.unregister() function (pythonGH-22360)
  bpo-41875: Use __builtin_unreachable when possible (pythonGH-22433)
  bpo-40105: ZipFile truncate in append mode with shorter comment (pythonGH-19337)
  bpo-41870: Use PEP 590 vectorcall to speed up bool()  (pythonGH-22427)
  [doc] Leverage the fact that the actual types can now be indexed for typing (pythonGH-22340)
  bpo-41861: Convert _sqlite3 cache and node static types to heap types (pythonGH-22417)
  bpo-41858: Clarify line in optparse doc (pythonGH-22407)
  Revert "Fix all Python Cookbook links (python#22205)" (pythonGH-22424)
  bpo-1635741: Port _bisect module to multi-phase init (pythonGH-22415)
  bpo-41428: Fix compiler warning in unionobject.c (pythonGH-22416)
  Fix logging error message (pythonGH-22410)
  bpo-39934: Account for control blocks in 'except' in compiler. (pythonGH-22395)
  bpo-41775: Make 'IDLE Shell' the shell title  (python#22399)
  bpo-41428: Fix compiler warnings in unionobject.c (pythonGH-22388)
  bpo-41654: Fix compiler warning in MemoryError_dealloc() (pythonGH-22387)
  bpo-41833: threading.Thread now uses the target name (pythonGH-22357)
  bpo-30155: Add macros to get tzinfo from datetime instances (pythonGH-21633)
  ...