anchor.diff:  1,"apachev2"
   1,"APACHE2"
   9,"Apache-2.0"
  -5,"Apache"
  +6,"Apache"
   1,"Apache v2.0"
   1,"Apache v2"
   6,"Apache License, Version 2.0"
  
positive.code: 4,"LGPL"
  3,"ISC"
  1,"GSLv3"
  3,"GPLv3"
  2,"GPLv3 or later"
  1,"GPLv2"
  1,"GPL3"
  
negative.code: 3,"GPL-3.0"
  6,"GPL-3"
  1,"GPL-2.0"
  9,"GPL-2"
  4,"GPL"
  9,"GPL 2"
  2,"GNU"
  