Additional contributers to GNU Aris.

  Copyright (C) 2012, 2013, 2014 Ian Dunn.

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

Thanks to:

     Bram van Heuveln for his knowledge of logic.

     Karl Berry and RMS for pointing at s-expressions and interoperability.

See also the AUTHORS and ChangeLog files.
