[docs] [issue28388] Update documentation for typing module

[Ivan Levkivskyi]

New submission from Ivan Levkivskyi:

Here is the patch with updates according to recent changes in typing module and PEP 484:

- most things are not classes now
- outcome of parameterizing generics is cached
- Union does not unify everything with Any
- few minor fixes

This patch also fixes http://bugs.python.org/issue27588

The attached patch is generated for 3.5

----------
assignee: docs at python
components: Documentation
files: doc-typing-patch.diff
keywords: patch
messages: 278283
nosy: docs at python, gvanrossum, levkivskyi
priority: normal
severity: normal
status: open
title: Update documentation for typing module
versions: Python 3.5, Python 3.6
Added file: http://bugs.python.org/file45007/doc-typing-patch.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28388>
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