* Three new dependencies have been added: httplib2, oauth2client, and pysocks.
* One dependency has been removed: oauthlib
* BREAKING CHANGE: Python3 versions < 3.3 are no longer supported.
* BREAKING CHANGE: The https_proxy argument for the GoogleRefreshTokenClient has
been deprecated. It has been replaced by proxy_info, which is an optional
argument taking an httplib2.ProxyInfo instance.
* PYTHON2 ONLY: You may now authorize with Service Accounts using the new
GoogleServiceAccountClient. As of this release, it will only work with
Python2.
* Added new Service Account authorization examples for AdWords, DFA, and DFP.
* The googleads.yaml file has been refactored to reflect the changes to proxy
support.
* WARNING: As of this release, you must set disable_ssl_certificate_validation
to False when using Python3.
* Added new examples for DFP Sales Manager: PremiumRateService, BaseRateService,
ExchangeRateService, RateCardService, WorkflowRequestService, ProductService,
ProductTemplateService.