anchor.diff:  1,BSD-3-clause
   8,BSD 3-Clause
   3,BSD 2-Clause
  -26,BSD
  +28,BSD
   1,Beerware
   1,BAT
   4,Artistic 2.0
   1,APLv2
   1,APL 2.0
   1,apachev2
  -9,APACHE2
   1,apache2
  +10,APACHE2
   3,Apache-2.0
   1,Apache, Version 2.0
   2,Apache v2
  
positive.code: 1,Copyright (c) Rajarshi Das. All rights reserved
  5,Copyright (c) Joe McIlvain. All rights reserved 
  1,Commercial
  1,CC0
  1,cc-zero
  1,CC-BY-SA
  1,CC-BY-NC-SA 3.0
  
negative.code: 1,Apache License, v2.0
  4,Apache License Version 2.0
  1,Apache License version 2
  5,Apache License V2.0
  7,Apache License 2.0
  7,Apache License (2.0)
  1,Apache Licence 2.0
  