anchor.diff:  3,"LGPL-3.0"
   3,"LGPL-3"
   1,"LGPL-2.1"
  -4,"LGPL"
  +5,"LGPL"
   3,"ISC"
   1,"GSLv3"
   4,"GPLv3"
   2,"GPLv3 or later"
   1,"GPLv2"
   1,"GPL3"
  -1,"GPL-3.0+"
  +2,"GPL-3.0+"
   3,"GPL-3.0"
   6,"GPL-3"
   1,"GPL-2.0"
  
positive.code: 1,"UNLICENSE"
  1,"The Ruby License"
  1,"Suvankar"
  2,"RUBY"
  5,"Ruby"
  3,"Public Domain"
  2,"Public Domain (CC0)"
  1,"Proprietary"
  1,"Perl Artistic v2"
  1,"MIT-LICENSE"
  749,"MIT"
  1,"MIT License"
  1,"MIT (see LICENSE file)"
  1,"LPGL-3"
  
negative.code: 2,"APLv2"
  1,"apachev2"
  1,"APACHE2"
  10,"Apache-2.0"
  6,"Apache"
  1,"Apache v2.0"
  1,"Apache v2"
  7,"Apache License, Version 2.0"
  1,"Apache License, v2"
  3,"Apache License 2.0"
  2,"Apache License (2.0)"
  1,"Apache Licence v2"
  15,"Apache 2.0"
  1,"Apache 2"
  1,"ALv2"
  1,"AGPL3"
  1,"AGPL-3.0"
  