v2.0.0 Post Release Fix

• Fix Google Compute Engine breakage (#411, breakage introduced in #387) that
  made it impossible to obtain access tokens
• Implement ServiceAccountCredentials.from_p12_keyfile_buffer()
  to allow passing a file-like object in addition to the factory
  constructor that uses a filename directly (#413)
• Implement ServiceAccountCredentials.create_delegated()
  to allow upgrading a credential to one that acts on behalf
  of a given subject (#420)

v2.0.0

• Add django_util (#332)
• Avoid OAuth2Credentials id_token going out of sync after a token refresh (#337)
• Move to a contrib sub-package code not considered a core part of the library (#346, #353, #370, #375, #376, #382)
• Add token_expiry to devshell credentials (#372)
• Move Storage locking into a base class (#379)
• Added dictionary storage (#380)
• Added to_json and from_json methods to all Credentials classes (#385)
• Fall back to read-only credentials on EACCES errors (#389)
• Coalesced the two ServiceAccountCredentials classes (#395, #396, #397, #398, #400)

Special Note About ServiceAccountCredentials:

For JSON keys, you can create a credential via

from oauth2client.service_account import ServiceAccountCredentials
credentials = ServiceAccountCredentials.from_json_keyfile_name(
    key_file_name, scopes=[...])

You can still rely on

from oauth2client.client import GoogleCredentials
credentials = GoogleCredentials.get_application_default()

returning these credentials when you set the GOOGLE_APPLICATION_CREDENTIALS environment variable.

For .p12 keys, construct via

credentials = ServiceAccountCredentials.from_p12_keyfil(
    service_account_email, key_file_name, scopes=[...])

though we urge you to use JSON keys (rather than .p12 keys) if you can. This is equivalent to the previous method

# PRE-oauth2client 2.0.0 EXAMPLE CODE!
from oauth2client.client import SignedJwtAssertionCredentials
with open(key_file_name, 'rb') as key_file:
    private_key = key_file.read()
credentials = SignedJwtAssertionCredentials(
    service_account_email, private_key, scope=[...])

v1.5.2

• Add access token refresh error class that includes HTTP status (#310)
• Python3 compatibility fixes for Django (#316, #318)
• Fix incremental auth in flask_util (#322)
• Fall back to credential refresh on EDEADLK in multistore_file (#336)

v1.5.1

• Fix bad indent in tools.run_flow() (#301, bug was
  introduced when switching from 2 space indents to 4)

v1.5.0

• Fix (more like clarify) bytes / str handling in crypto
  methods. (#203, #250, #272)
• Replacing webapp with webapp2 in oauth2client.appengine (#217)
• Added optional state parameter to
  step1_get_authorize_url. (#219 and #222)
• Added flask_util module that provides a Flask extension to aid
  with using OAuth2 web server flow. This provides the same functionality
  as the appengine.webapp2 OAuth2Decorator, but will work with any Flask
  application regardless of hosting environment. (#226, #273)
• Track scopes used on credentials objects (#230)
• Moving docs to [readthedocs.org][1](#237, #238, #244)
• Removing old_run module. Was deprecated July 2, 2013. (#285)
• Avoid proxies when querying for GCE metadata (to check if
  running on GCE) (#114, #293)

v1.4.12

• Fix OS X flaky test failure (#189).
• Fix broken OpenSSL import (#191).
• Remove @util.positional from wrapped request in Credentials.authorize()
  (#196, #197).
• Changing pinned dependencies to >= (#200, #204).
• Support client authentication using Authorization header (#206).
• Clarify environment check in case where GAE imports succeed but GAE services
  aren't available (#208).

See https://github.com/google/oauth2client/blob/master/CHANGELOG.md

v1.4.11

Merge pull request #187 from craigcitro/new_release

Update for v1.4.11 release.

v1.4.6

Merge pull request #116 from nathanielmanistaatgoogle/master

Release v1.4.6.