I also added the docs that never got committed, editing the patch provided by
Claudiu.

I collapsed the now three versionchanged directives for discovery into one.  I
tried several different styles for this.  The most obvious is a bulleted list,
but currently the only way I could find to produce that is to have *something*
appear on the versionchanged line after the colon, which combined with the
blank space before the bulleted list just looks wrong.  I also tried the
current single-line-three-sentences version with bullet characters before each
sentence, and I almost went with that as it made it clear that the three
sentences are independent.  But I decided to just go with the sentences for
simplicity reasons.

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

are opened in text mode. Patch by Serhiy Storchaka.

The 3.4rc2 Windows uninstaller would fail if pip had been updated
to a version that didn't match the version installed by ensurepip.
This skip is no longer treated as an error, so an updated pip ends
up being handled like any other pip installed package and is left
alone by the CPython uninstaller.

Code patch by Serhiy Storchaka

I had incorrectly added back the shorten method when I initially
made the whatsnew entry, but the shorten function docs were not
correct according to the code.  I also improved the wording in
general.

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.

That is: one paragraph per feature.

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

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

PathEntryFinder instances which only define find_module().

Reported by Yukihiro Nakadaira.