try RFC1123
Update __init__.py
no version change
Merge pull request #1397 from fivethreeo/develop

Amazon S3 date format
Change default gs.acl.Acl entry list to be an actual Entries object.
Merge pull request #1408 from jterrace/fix-acl-init

Change default gs.acl.Acl entry list to be an actual Entries object.
Support for GCS object composition and CRC32c hashes.
Merge pull request #1409 from yovadia12/compose

Support for GCS object composition and CRC32c hashes.