non-free Addon : Mythical Sirens Summer Night

[Olivier Brun]

this addon isnt licensed under MPL 1.1/ GPL 2.0/ LGPL 2.1, but undera
Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States 
License.
http://creativecommons.org/licenses/by-nc-sa/3.0/us/

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