Explanation for binary files inside source package according to

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

Files: tests/bug.RData
Documentation:

  ->  ## private communication from Gwen (gleday <gleday@few.vu.nl>) via Kurt Hornik
      ## produced an endless loop on some platforms.

 -- Dirk Eddelbuettel <edd@debian.org>, Tue, 30 Apr 2019 08:45:49 -0500
