Cleanup columnize function
Cleanup columnize function

zooniverse/gorongosa,zooniverse/Wisconsin-Zoo,zooniverse/Serengeti,alexbfree/Serengeti,zooniverse/gorongosa,zooniverse/Snapshot-Chicago,zooniverse/Serengeti,zooniverse/Wisconsin-Zoo,zooniverse/Serengeti,alexbfree/Serengeti,alexbfree/Serengeti,zooniverse/Snapshot-Chicago