* main:  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)pythongh-78997: AttributeError if loading fails in LibraryLoader.__getattr__pythonGH-100234: Set a default value for random.expovariate() (pythonGH-100235)  Remove uninformative itertools recipe (pythonGH-100253)pythonGH-99767: update PyTypeObject docs for type watchers (pythonGH-99928)  Move stats for the method cache into the `Py_STAT` machinery (pythonGH-100255)pythonGH-100222: fix typo _py_set_opocde -> _py_set_opcode (pythonGH-100259)pythonGH-100000: Cleanup and polish various watchers code (pythonGH-99998)pythongh-90111: Minor Cleanup for Runtime-Global Objects (pythongh-100254)

* origin/main: (1306 commits)  CorrectCVE-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)  ...