-
Add
GoogleCredentials.createDelegated()method to allow using domain-wide delegation with service accounts (#102 addresses #90): see https://developers.google.com/identity/protocols/OAuth2ServiceAccount#delegatingauthority -
Retry HTTP errors in
ServiceAccountCredentials.refreshAccessToken()to avoid propagating failures (#100 addresses #91) -
Allow bypassing App Engine credential check using environment variable, to allow Application Default Credentials to detect GCE when running on GAE Flex (#103)