Zeep

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- Fix AnyType value rendering by guessing the xsd type for the value (552)
- Fix AnySimpleType.xmlvalue() not implemented exception (644)
- Add __dir__ method to value objects returned by Zeep
- Don't require content for 201 and 202 status codes (613)
- Fix wheel package by cleaning the build directory correctly (634)
- Handle Nil values on complexType with SimpleContent elements (604)
- Add Client.namespaces method to list all namespaces available
- Improve support for auto-completion (537)

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- Add support for tornado async transport via gen.coroutine (530, Kateryna Burda)
- Check if soap:address is defined in the service port instead of raising an
exception (527)
- Update packaging (stop using find_packages()) (529)
- Properly handle None values when rendering complex types (526)
- Fix generating signature for empty wsdl messages (542)
- Support passing strings to xsd:Time objects (540)

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- The XML send to the server is no longer using ``pretty_print=True`` (484)
- Refactor of the multiref support to fix issues with child elements (489)
- Add workaround to support negative durations (486)
- Fix creating XML documents for operations without aguments (479)
- Fix xsd:extension on xsd:group elements (523)

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- Automatically import the soap-encoding schema if it is required (473)
- Add support for XOP messages (this is a rewrite of 325 by vashek)

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- Fix previous release, it contained an incorrect dependency (Mock 2.1.) due
to bumpversion :-(

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- Fix recursion error while creating the signature for a global element when
it references itself (via ref attribute).
- Update Client.create_message() to apply plugins and wsse (465)
- Fix handling unknown xsi types when parsing elements using xsd:anyType (455)