Idle ColorDelegator: finish removing code for 'as'.

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branch : 3.4
Forward port PEP 466 What's New in 2.7 updates

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Merge heads.

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branch : 3.4
Issue #22232 (partial fix): update Universal newlines Glossary entry.

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branch : 3.4
Issue #22243: fix except grammar in reference.

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branch : 3.4
Issue #21166: fix typo in comment

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branch : 3.4