LICENSE.txt

   1 The person who associated a work with this deed has dedicated the work
   2 to the public domain by waiving all of his or her rights to the work
   3 worldwide under copyright law, including all related and neighboring
   4 rights, to the extent allowed by law.
   5
   6 You can copy, modify, distribute and perform the work, even for
   7 commercial purposes, all without asking permission.
   8
   9 See https://creativecommons.org/publicdomain/zero/1.0/ for details.