Explanation for binary files inside source package according to

  http://lists.debian.org/debian-devel/2013/09/msg00332.html

Files: inst/doc/sunw.rda
       vignettes/sunw.rda
  -> Historical data for SUNW

Files: inst/doc/MSFT.rda
       vignettes/MSFT.rda
  -> Historical public domain data for MSFT
                                    
 -- Dirk Eddelbuettel <edd@debian.org>, Mon,  8 Jan 2018 21:23:12 -0600
