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* Use fast path if quoted string does not need requoting (154)
* Speed up quoting/unquoting by ``_Quoter`` and ``_Unquoter`` classes (155)
* Drop ``yarl.quote`` and ``yarl.unquote`` public functions (155)
* Add custom string writer, reuse static buffer if available (157)
Code is 50-80 times faster than Pure Python version (was 4-5 times faster)
* Don't recode IP zone (144)
* Support ``encoded=True`` in ``yarl.URL.build()`` (158)
* Fix updating query with multiple keys (160)