[issue24450] Add cr_await calculated property to coroutine object

[Yury Selivanov]

Changes by Yury Selivanov <yselivanov at gmail.com>:


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title: Add gi_yieldfrom calculated property to generator object -> Add cr_await calculated property to coroutine object

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24450>
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