[issue37759] Polish whatsnew for 3.8

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

What's New in Python 3.8:

* functools.singledispatchmethod is missing
https://docs.python.org/dev/library/functools.html#functools.singledispatchmethod

* About "Added new multiprocessing.shared_memory module. (Contributed by Davin Potts in bpo-35813.)". Comment on Hacker News: "Hard to understand why this is so far down. This is fantastic news!" and "Shared Memory is the star of this release IMHO." I agree with that :-)

* Maybe PYTHONCACHEPREFIX should be better highlighted? "Anyone else most excited about PYTHONCACHEPREFIX? :-P" and "Not sure about most excited, but I am looking forward to setting PYTHONCACHEPREFIX to a location that isn't in a volume mounted into my Docker container for development."

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nosy: +vstinner

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37759>
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