Bump version number

Bumped version to 0.2.11 (now requires zeep >= 3.0.0)

Bump version after merging pull request

v0.2.0

Release new version of pypi package

 new version: 0.1.3

Release 0.1.2: Add examples and cache support.

Release 0.1.1: Add WSDL files.

Release 0.1.0: First release.