Column names and types (First 10)
- solarized:list
- ptol:list
- calc:list
- tableau:list
- few:list
- manyeyes:character
- gdocs:list
- excel:list
- wsj:list
- colorblind:tbl_dftbldata.frame
- shapes:list
- stata:list
- hc:list
- fivethirtyeight:tbl_dftbldata.frame
- economist:list