anchor.diff:  5,"GPL-3"
   1,"GPL-2.0"
   7,"GPL-2"
  -2,"GPL"
  -7,"GPL 2"
  +3,"GPL"
  +8,"GPL 2"
   1,"GNU"
  +1,"GNU V2"
   1,"GNU GPL v2"
   1,"EPL-1.0"
   1,"CDDL-1.0"
   1,"BSD-3"
   5,"BSD-2-Clause"
   1,"BSD-2"
  -5,"BSD"
  +6,"BSD"
   1,"BSD 3-Clause"
   1,"BSD 2-Clause"
   1,"Beerware"
   1,"Artistic 2.0"
   2,"APLv2"
   1,"apachev2"
  +1,"APACHE2"
   5,"Apache-2.0"
   5,"Apache"
   1,"Apache v2.0"
  
positive.code: 2,"Apache License 2.0"
  2,"Apache License (2.0)"
  1,"Apache Licence v2"
  8,"Apache 2.0"
  1,"AGPL3"
  1,"AGPL-3.0"
  
negative.code: 1,"UNLICENSE"
  1,"The Ruby License"
  1,"Suvankar"
  2,"RUBY"
  5,"Ruby"
  3,"Public Domain"
  2,"Public Domain (CC0)"
  1,"Perl Artistic v2"
  1,"MIT-LICENSE"
  578,"MIT"
  1,"MIT License"
  1,"LPGL-3"
  1,"LGPL3"
  