Added automatic retries for any 429, 500, 502, 503 or 504 error responses.
The retry algorithm will sleep for 1, 2, 4, 8, 16, 32, 64, 64, ... seconds, doubling the wait time for each new failure until a maximum of 64 seconds is reached. (There will be some random jitter added to each sleep time to avoid server overload from multiple clients.) If 10 total minutes of wait time have accrued, there are no more attempts to retry.
This re-org was mentioned in the initial release notes as:
Automatic retries with exponential backoff for retry-able errors (429, 500, 502, 503, 504)
PyPI: https://pypi.python.org/pypi/google-resumable-media/0.0.3
Docs: https://googlecloudplatform.github.io/google-resumable-media-python/0.0.3/