anchor.diff:  2,"APLv2"
   1,"apachev2"
   1,"APACHE2"
  -7,"Apache-2.0"
  +8,"Apache-2.0"
   5,"Apache"
   1,"Apache v2.0"
   1,"Apache v2"
  
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,"GPLv2"
  1,"GPL3"
  1,"GPL-3.0+"
  3,"GPL-3.0"
  6,"GPL-3"
  1,"GPL-2.0"
  8,"GPL-2"
  