The core Discount C sources are
Copyright (C) 2007 David Loren Parsons.

The Discount Ruby extension sources are
Copyright (C) 2008 Ryan Tomayko.

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1.  Redistributions of works must retain the original copyright notice,
    this list of conditions and the following disclaimer.
2.  Redistributions in binary form must reproduce the original copyright
    notice, this list of conditions and the following disclaimer in the
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3.  Neither my name (David L Parsons) nor the names of contributors to
    this code may be used to endorse or promote products derived
    from this work without specific prior written permission.

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