Portions copyright (c) 2008, Andrew Hodgkinson
Portions copyright (c) 2009, Simon Stearn
  All rights reserved.

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
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  * Neither the name of Hipposoft nor the names of its contributors may
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  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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