GeezerVison

* main:
  pythongh-99540: Constant hash for _PyNone_Type to aid reproducibility (pythonGH-99541)
  pythongh-100039: enhance __signature__ to work with str and callables (pythonGH-100168)
  pythongh-99830: asyncio: Document returns of remove_{reader,writer} (python#100302)
  "Compound statement" docs: Fix with-statement step indexing (python#100286)
  pythonGH-90043: Handle NaNs in COMPARE_OP_FLOAT_JUMP (pythonGH-100278)

* origin/main: (1306 commits)
  Correct CVE-2020-10735 documentation (python#100306)
  pythongh-100272: Fix JSON serialization of OrderedDict (pythonGH-100273)
  pythongh-93649: Split tracemalloc tests from _testcapimodule.c (python#99551)
  Docs: Use `PY_VERSION_HEX` for version comparison (python#100179)
  pythongh-97909: Fix markup for `PyMethodDef` members (python#100089)
  pythongh-99240: Reset pointer to NULL when the pointed memory is freed in argument parsing (python#99890)
  pythongh-99240: Reset pointer to NULL when the pointed memory is freed in argument parsing (python#99890)
  pythonGH-98831: Add DECREF_INPUTS(), expanding to DECREF() each stack input (python#100205)
  pythongh-78707: deprecate passing >1 argument to `PurePath.[is_]relative_to()` (pythonGH-94469)
  pythongh-99540: Constant hash for _PyNone_Type to aid reproducibility (pythonGH-99541)
  pythongh-100039: enhance __signature__ to work with str and callables (pythonGH-100168)
  pythongh-99830: asyncio: Document returns of remove_{reader,writer} (python#100302)
  "Compound statement" docs: Fix with-statement step indexing (python#100286)
  pythonGH-90043: Handle NaNs in COMPARE_OP_FLOAT_JUMP (pythonGH-100278)
  Improve stats presentation for calls. (pythonGH-100274)
  Better stats for `LOAD_ATTR` and `STORE_ATTR` (pythonGH-100295)
  pythongh-81057: Move the Cached Parser Dummy Name to _PyRuntimeState (python#100277)
  Document that zipfile's pwd parameter is a `bytes` object (python#100209)
  pythongh-99767: mark `PyTypeObject.tp_watched` as internal use only in table (python#100271)
  Fix typo in introduction.rst (python#100266)
  ...

This is an alternative to python#100168.

This is an alternative to python#100168.

This is an alternative to python#100168.

…H-116234)

This is an alternative to GH-100168.

…ute (pythonGH-116234)

This is an alternative to pythonGH-100168.