Issue #20939: Use www.example.com instead of www.python.org to avoid test
failures when ssl is not present.
Issue #6676: Ensure a meaningful exception is raised when attempting
to parse more than one XML document per pyexpat xmlparser instance.
(Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with
suggested wording by David Gutteridge)
Issue #17654: Ensure IDLE menus are customized properly on OS X for
non-framework builds and for all variants of Tk.
Update suspicious ignore file.
Issue #21093: Prevent failures of ctypes test_macholib on OS X if a
copy of libz exists in $HOME/lib or /usr/local/lib.
Minor readability improvement.
Issue #21029: IDLE now colors print consistently as a keyword.
support CDN purging
fix indentation and add braces
add braces and fix indentation
fix expandtabs overflow detection to be consistent and not rely on signed overflow
fix overflow detection of strop.expandtabs
add Ian Beer
use https docs url (#21115)
Issue #15067: Remove reference to a rejected PEP.

Further explanation of the concept stands alone without this reference,
no need to potentially confuse people by bringing up a feature that
doesn't exist.
Issue 21125: minor wording tweak.
bail in unicode error's __str__ methods if the objects are not properly initialized (closes #21134)
make sure to test UnicodeEncodeError, too
properly close files in test_zipfile (#20887)

Patch by Matti Picus.
Issue #21149: Improved thread-safety in logging cleanup during interpreter shutdown.