Issue #15301: Parsing fd, uid, and gid parameters for builtins
in Modules/posixmodule.c is now far more robust.
#18273: move the tests in Lib/test/json_tests to Lib/test/test_json and make them discoverable by unittest.  Patch by Zachary Ware.
#18273: merge with 3.3.
#18267: make whitespace consistent and fix an operator.
#18267: merge with 3.3.
Fix a typo in PyUnicode_CopyCharacters() documentation.
Fix a typo in PyUnicode_CopyCharacters() documentation.
#18581: remove duplicate test and run a test class that was skipped.  Initial patch by Vajrasky Kok.
#18581: merge with 3.3.
#18357: add tests for dictview set difference.  Patch by Fraser Tweedale.
#18357: merge with 3.3.
Closes #18671: Output more information when logging exceptions occur.