anchor.diff:  1,BSD-2-Clause
   8,BSD 3-Clause
   3,BSD 2-Clause
  -31,BSD
  -1,Beerware
  +1,bsd
  +40,BSD
  +2,Beerware
   1,BAT
   4,Artistic 2.0
   1,APLv2
  
positive.code: count,license
  8,WTFPL
  1,WTF
  1,Various
  1,UNLICENSE
  1,THE (extended) BEER-WARE LICENSE
  5,Simplified BSD
  1,Ruby's or GPLv2 or later
  1,Ruby's
  1,Ruby License
  4,Ruby
  2,R2CORBA
  20,Public Domain
  3,Public domain
  1,Proprietary
  1,PAL
  1,New-BSD
  
negative.code: 3,ISC
  1,Internet Systems Consortium (ISC)
  2,http://www.apache.org/licenses/LICENSE-2.0.txt
  1,http://unlicense.org/
  1,GSLv3
  1,GPLv3+
  12,GPLv3
  5,GPLv2
  5,GPL3
  1,GPL2
  19,GPL-3
  20,GPL-2
  1,GPL v3.0
  1,GPL v2
  1,GPL Lv.3
  