Fix resumable catch-up hashing bug, add tests
Indent bucket multiline fields (e.g., ACLs) in ls -Lb.
Changed gsutil -D to redact proxy config values in output
Implement SSL timeout for all httplib2 JSON instances
Add random jitter to wait between retry attempts.
Preserve metadata across copy-in-the-cloud
Clarify du behavior for file/object hierarchies

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Properly elide subdirectories in du -s when the argument is a subdirectory.