anchor.diff:  count,license
  -3,"WTFPL"
  +4,"WTFPL"
   1,"UNLICENSED"
   1,"UNLICENSE"
   1,"The Ruby License"
  
positive.code: 1,"apachev2"
  1,"APACHE2"
  9,"Apache-2.0"
  5,"Apache"
  1,"Apache v2.0"
  1,"Apache v2"
  6,"Apache License, Version 2.0"
  
negative.code: 4,"LGPL"
  3,"ISC"
  1,"GSLv3"
  4,"GPLv3"
  2,"GPLv3 or later"
  1,"GPLv2"
  1,"GPL3"
  