anchor.diff:  count,license
   5,WTFPL
  +1,Various
   1,THE (extended) BEER-WARE LICENSE
  -4,Simplified BSD
  +5,Simplified BSD
   1,Ruby's or GPLv2 or later
   4,Ruby
   19,Public Domain
   3,Public domain
   1,Proprietary
  +1,PAL
   1,New-BSD
   2,New BSD License
   1,MPL
   2,MIT-LICENSE
   1,MIT, Simplified BSD, Apache 2.0
   1,MIT, Apache License v2.0
  -1,MIT License
  +2,MIT License
   1,MIT (http://opensource.org/licenses/MIT)
   1,mit
  -1092,MIT
  +1137,MIT
   2,LGPLv3
   1,LGPLv2.1+
   1,LGPLv2.1
   7,LGPL-3
  -10,LGPL
  +9,LGPL
   2,ISC License
   2,ISC
  -3,http://www.apache.org/licenses/LICENSE-2.0.txt
   1,GSLv3
   1,GPLv3+
   4,GPLv3
   2,GPLv2
  -3,GPL3
  -6,GPL-3
  -14,GPL-2
  +4,GPL3
  +7,GPL-3
  +15,GPL-2
   1,GPL v3.0
   1,GPL Lv.3
  -6,GPL
  +7,GPL
   1,GNU GPLv3 and AGPLv3
  +1,GNU GPL
   1,ECLv2
  +1,CPL
   1,Copyright 2013 AgileWings
   4,Copyright (c) Joe McIlvain. All rights reserved 
   1,Commercial
  
positive.code: 1,BSD-3-clause
  7,BSD 3-Clause
  2,BSD 2-Clause
  18,BSD
  1,Beerware
  4,Artistic 2.0
  1,APLv2
  
negative.code: 6,Apache License 2.0
  7,Apache License (2.0)
  1,Apache Licence 2.0
  36,Apache 2.0
  1,Apache 2
  8,Apache
  1,all of them
  4,AGPL
  1,3-clause BSD
  