Patch by Lita Cho.

it clear that any Python 3.x is not usable with the checked out Sphinx.

Patch by Priya Pappachan, based on suggestions from Terry Reedy
and myself.

Patch by Claudiu Popa.

This fifth tuple element is unsupported in an old hg version still used on
one buildbot, and it is not really necessary (only used in touch --help).

This was perhaps on the border between a bug fix and a feature since
the Python3 docs did not originally say it was unix only.  However, the
functions never worked anywhere but unix, and the docs were changed to
say it was unix only well before the windows support was added.

Unfortunately, windows support was added in 3.3.4 as well as 3.4.
That leaves us in the uncomfortable position of needing the tag to say
"version changed: 3.3.4" :(

pylauncher.vcxproj already has the same dependency, and adding it to
the pywlauncher project eliminates the possibility of the pywlauncher
build failing when building the solution in parallel.  In particular,
pywlauncher may fail to build when doing a "Rebuild Solution" from the
VS Build menu.

as documented.  The pattern and source keyword parameters are left as
deprecated aliases.

index.  This avoids the possibility of setting an iterator to an invalid
state.

to the exhausted state.

Thanks Vajrasky Kok and Zachary Ware.

Bug filed and initial attempt at a patch by Bohuslav Kabrda.

are opened in text mode. Patch by Serhiy Storchaka.

Code patch by Serhiy Storchaka

Issue #20791: copy.copy() now doesn't make a copy when the input is a bytes object.  Initial patch by Peter Otten.

Patch by Berker Peksag.

The signature and description of PyException_SetCause now use "cause"
rather than "ctx" to match the code.

This bug was of the major reasons for the release.

Patch by Sean Rodman.