v0.12.8
This backports the changes from the v0.14.1 release to Python 2.7:
- Update Google storage to use the storage URI of the file to be uploaded to guess the mimetype, if there is no local filename.
- Update AWS S3 storage to infer the mimetype of the file to be uploaded using the same precedence as Google storage.
- Update error when parsing scheme of storage URI to not include credentials when the Storage URI has no scheme.