[issue19075] Add sorting algorithm visualization to turtledemo

[Ethan Furman]

Ethan Furman added the comment:

What are the requirements (if any) to get something added to demos?  If not many, I'll spiffy up the code a bit (mostly make it go more than one round without having to restart).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19075>
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