anchor.diff:  3,http://www.apache.org/licenses/LICENSE-2.0.txt
   1,http://unlicense.org/
   1,GSLv3
  -1,GPLv3+
  +3,GPLv3+
   13,GPLv3
  +1,GPLv2+
   5,GPLv2
  -5,GPL3
  +6,GPL3
   1,GPL2
  -20,GPL-3
  -20,GPL-2
  +22,GPL-3
  +22,GPL-2
   1,GPL v3.0
   1,GPL v2
   1,GPL Lv.3
  
positive.code: 10,Apache License 2.0
  9,Apache License (2.0)
  1,Apache Licence 2.0
  66,Apache 2.0
  3,Apache 2
  1,APACHE 2
  10,Apache
  2,APACHE
  1,All right reserved.
  1,all of them
  1,AGPL3
  5,AGPL
  3,ACE
  1,3-clause BSD
  1,3-Clause BSD
  
negative.code: 1,New-BSD
  3,New BSD License
  1,MSU
  8,MPL2.0/LGPLv3
  1,MPL/LGPL
  1,MPL-2.0
  1,MPL
  1,Modified BSD
  