sonic_asalga_0.png font
  from http://opengameart.org/content/sonic-font
  by Andor Salga, http://opengameart.org/users/asalga
  License(s): CC-BY-SA 3.0

null_terminator_0.png font
  from http://opengameart.org/content/null-terminator
  by Andor Salga, http://opengameart.org/users/asalga
  License(s): CC0

DejaVuSans.ttf
  from Debian ttf-dejavu package.
  License: http://dejavu-fonts.org/wiki/License
    May also be found in /usr/share/doc/ttf-dejavu/copyright
    on a Debian system with ttf-dejavu installed.

PARPG.ttf
  from http://opengameart.org/content/old-typewriter-font
  by Q_x http://opengameart.org/users/qx
  License(s): CC0