anchor.diff:  1,"GPLv2"
   1,"GPL3"
   1,"GPL-3.0+"
  -1,"GPL-3.0"
  +3,"GPL-3.0"
   6,"GPL-3"
   1,"GPL-2.0"
   8,"GPL-2"
  
positive.code: 3,"Apache License 2.0"
  2,"Apache License (2.0)"
  1,"Apache Licence v2"
  12,"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,"Proprietary"
  1,"Perl Artistic v2"
  1,"MIT-LICENSE"
  668,"MIT"
  1,"MIT License"
  1,"LPGL-3"
  1,"LGPLv2"
  1,"LGPL3"
  3,"LGPL-3.0"
  3,"LGPL-3"
  