Explanation for binary files inside source package according to
  https://lists.debian.org/debian-devel/2013/09/msg00332.html

Files: data/brainCancer.rda
Documented: man/brainCancer.Rd
  The brain cancer data set

Files: data/mini.rda
Documented: man/mini.Rd
  An example data set derived from the brain cancer data set

 -- Steffen Moeller <moeller@debian.org>  Sun, 15 Sep 2019 13:35:37 +0200
