anchor.diff:  2,http://www.apache.org/licenses/LICENSE-2.0.txt
   1,GSLv3
   1,GPLv3+
  -5,GPLv3
  +6,GPLv3
   2,GPLv2
   5,GPL3
   14,GPL-3
  -15,GPL-2
  +16,GPL-2
   1,GPL v3.0
   1,GPL Lv.3
  -11,GPL
  +12,GPL
   1,GNU Lesser General Public License, Version 3.0
   1,GNU GPLv3 and AGPLv3
   1,GNU GPL
  
positive.code: 1,MIT, Apache License v2.0
  2,MIT License
  1,MIT (http://opensource.org/licenses/MIT)
  2,mit
  1549,MIT
  3,LGPLv3
  1,LGPLv2.1+
  1,LGPLv2.1
  7,LGPL-3
  9,LGPL
  2,ISC License
  
negative.code: 7,Apache License 2.0
  7,Apache License (2.0)
  1,Apache Licence 2.0
  47,Apache 2.0
  3,Apache 2
  8,Apache
  2,APACHE
  1,all of them
  1,AGPL3
  5,AGPL
  