anchor.diff:  count,license
   2,"WTFPL"
  +1,"UNLICENSED"
  +1,"UNLICENSE"
   1,"Suvankar"
   2,"RUBY"
   4,"Ruby"
   2,"Public Domain"
   1,"Public Domain (CC0)"
   1,"Perl Artistic v2"
  -349,"MIT"
  +386,"MIT"
   1,"MIT License"
   1,"LPGL-3"
  +1,"LGPL-3.0"
   2,"LGPL-3"
   2,"LGPL"
   2,"ISC"
   3,"GPLv3"
  +2,"GPLv3 or later"
   1,"GPL3"
   1,"GPL-3.0+"
   1,"GPL-3.0"
   3,"GPL-3"
   1,"GPL-2.0"
   5,"GPL-2"
  -1,"GPL"
  +2,"GPL"
   4,"GPL 2"
   1,"GNU"
   1,"GNU GPL v2"
  
positive.code: 1,"Apache Licence v2"
  6,"Apache 2.0"
  1,"AGPL3"
  
negative.code: 1,"BSD 2-Clause"
  1,"Beerware"
  1,"Artistic 2.0"
  2,"APLv2"
  1,"apachev2"
  3,"Apache-2.0"
  4,"Apache"
  