Release 3.0.0

[theacodes]

Changelog (also in the diff):

• Populate token_expiry for GCE credentials. (Populate token expiry for GCE credentials #473)
• Move GCE metadata interface to a separate module. (Factor metadata interface into a separate module #520)
• Populate scopes for GCE credentials. (Populate scopes for gce.AppAssertionCredentials #524)
• Fix Python 3.5 compatibility. (Adding Python 3.5 capability #531)
• Add oauth2client.contrib.sqlalchemy, a SQLAlchemy-based credential store. (Add SQLAlchemy storage #527)
• Improve error when an invalid client secret is provided. (Adding exception text to exit message for invalid clientsecrets #530)
• Add oauth2client.contrib.multiprocess_storage. This supersedes the functionality in oauth2client.contrib.multistore_file. (Add multiprocess file storage. #504)
• Pull httplib2 usage into a separate transport module. (Begin transport module for httplib2 specific pieces. #559, Remove httplib2 parts from service_account module. #561)
• Refactor all django-related code into oauth2client.contrib.django_util. Add DjangoORMStorage, remove FlowField. (Django Refactors #546)
• Fix application default credentials resolution order. (Change Application Default Credentials resolution order. #570)
• Add configurable timeout for GCE metadata server check. (Add configurable timeout for metadata server. #571)
• Add warnings when using deprecated approval_prompt='force'. (Add warnings and helpers for prompt='consent'. #572)
• Add deprecation warning to oauth2client.contrib.multistore_file. (Add deprecation warning to multistore_file. #574)
• (Hygiene) PEP8 compliance and various style fixes (Use context manager for assertRaises #537, PEP8 cleanup #540, Update string formatters to new style #552, Update imports to only Packages or Modules #562)
• (Hygiene) Remove duplicated exception classes in oauth2client.contrib.appengine. (Remove unneeded contrib.appengine exceptions #533)

NOTE: The next major release of oauth2client (v4.0.0) will remove the oauth2client.contrib.multistore_file module.

[theacodes]

/fyi @pferate @waprin @thobrla @anthmgoogle @dhermes @elibixby @miedzinski

Thank you all for your contributions to this release. 🍨

[theacodes]

The release has been tagged and uploaded to PyPI. :)

[logan-waite]

The django refactoring doesn't appear on the Google API documentation, it's still telling users how to set up their apps for the previous release. Would this need to go onto the google/google-api-python-client repository as an issue, or does it belong here?

https://developers.google.com/api-client-library/python/guide/django

[theacodes]

@waprin