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: 2,"APLv2"
  1,"apachev2"
  1,"APACHE2"
  8,"Apache-2.0"
  5,"Apache"
  1,"Apache v2.0"
  1,"Apache v2"
  