anchor.diff:     https://archive.linux.duke.edu/cran/src/contrib/crayon_1.3.4.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/assertthat_0.2.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/cli_1.1.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/desc_1.2.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/prettyunits_1.0.2.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/rprojroot_1.3-2.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/withr_2.1.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/pkgbuild_1.0.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/pkgload_1.0.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/rcmdcheck_1.3.2.tar.gz \
  
positive.code:    https://archive.linux.duke.edu/cran/src/contrib/backports_1.1.2.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/broom_0.5.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/reshape_0.8.7.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/prettyunits_1.0.2.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/progress_1.2.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/GGally_1.4.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/ggstance_0.3.1.tar.gz \
  
negative.code:     praise_1.0.0.tar.gz \
      testthat_2.0.0.tar.gz \
      lintr_1.0.2.tar.gz \
      clisymbols_1.2.0.tar.gz \
      fs_1.2.6.tar.gz \
      ini_0.3.1.tar.gz \
  