The icons are mostly derived work from other icons. As such they are
licensed accordingly to the original license:

  Crystal Project: LGPL license as described in image_LICENSE_CP.txt

Unless stated in this file, icons are work of enthought, and are released
under BSD-like license.

Files and orginal authors:
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about.png                 Crystal Project
crit_error.png            Crystal Project
debug.png                 Crystal Project
error.png                 Crystal Project
warning.png               Crystal Project
