anchor.diff:  1,apache2
   3,Apache-2.0
   2,Apache v2
  -5,Apache License, Version 2.0
  +6,Apache License, Version 2.0
   1,Apache License, v2.0
   4,Apache License Version 2.0
   1,Apache License version 2
  
positive.code: 3,GPLv3
  2,GPLv2
  3,GPL3
  4,GPL-3
  14,GPL-2
  1,GPL v3.0
  1,GPL Lv.3
  
negative.code: 1,MIT License
  1,MIT (http://opensource.org/licenses/MIT)
  1,mit
  1017,MIT
  1,LGPLv3
  1,LGPLv2.1
  7,LGPL-3
  