[docs] [issue20722] newline is (partially) independent of universal newlines; needs to be made more clear in docs

[Cheryl Sabella]

Change by Cheryl Sabella <chekat2 at gmail.com>:


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stage:  -> needs patch
type:  -> enhancement
versions: +Python 3.8 -Python 3.4

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue20722>
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