dailymuse/s3-content-type-fixer — pull request #7 by tubaman (2014-12-13 00:58:02+00:00)
Title: Fix Issue #6: Don't set disposition to 'None'

If your S3 object didn't have an explicit content disposition, boto
returns a python None. If you then set that on the copied S3 object,
it actually sets the header value to the string 'None'.