v0.5.0

• Added app_engine.Signer. (#97)
• Added crypt.Signer.from_service_account_file. (#95)
• Fixed error handling in the oauth2 client. (#96)
• Fixed the App Engine system tests.

v0.4.0

• transports.grpc.secure_authorized_channel now passes kwargs to grpc.secure_channel. (#90)
• Added new property credentials.Singing.signer_email which can be used to identify the signer of a message. (#89)
• (google_auth_httplib2) Added a proxy to httplib2.Http.connections.

v0.3.2

• Fixed an issue where an ImportError would occur if google.oauth2 was imported before google.auth. (#88)

v0.3.1

• Fixed a bug where non-padded base64 encoded strings were not accepted. (#87)
• Fixed a bug where ID token verification did not correctly call the HTTP request function. (#87)

v0.3.0

• Added Google ID token verification helpers. (#82)
• Swapped the target and request argument order for grpc.secure_authorized_channel. (#81)
• Added a user's guide. (#79)
• Made service_account_email a public property on several credential classes. (#76)
• Added a scope argument to google.auth.default. (#75)
• Added support for the GCLOUD_PROJECT environment variable. (#73)

v0.2.0

• Added gRPC support. (#67)
• Added Requests support. (#66)
• Added google.auth.credentials.with_scopes_if_required helper. (#65)
• Added private helper for oauth2client migration. (#70)

v0.1.0

First release with core functionality available. This version is ready for
initial usage and testing.

• Added google.auth.credentials, public interfaces for Credential types. (#8)
• Added google.oauth2.credentials, credentials that use OAuth 2.0 access and refresh tokens (#24)
• Added google.oauth2.service_account, credentials that use Service Account private keys to obtain OAuth 2.0 access tokens. (#25)
• Added google.auth.compute_engine, credentials that use the Compute Engine metadata service to obtain OAuth 2.0 access tokens. (#22)
• Added google.auth.jwt.Credentials, credentials that use a JWT as a bearer token.
• Added google.auth.app_engine, credentials that use the Google App Engine App Identity service to obtain OAuth 2.0 access tokens. (#46)
• Added google.auth.default(), an implementation of Google Application Default Credentials that supports automatic Project ID detection. (#32)
• Added system tests for all credential types. (#51, #54, #56, #58, #59, #60, #61, #62)
• Added google.auth.transports.urllib3.AuthorizedHttp, an HTTP client that includes authentication provided by credentials. (#19)
• Documentation style and formatting updates.