A warm thank you

to the authors of flickr who gave licence of their pictures to Creative Commons.

Author : Pedro Ribeiro Simões
License : CC BY 2.0
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Author : Chris Blackhead
Licence : CC BY-SA 2.0
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Changes were made

Author : Deni Williams
Licence : CC BY 2.0
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Author : Warren R. M. Stuart
Licence : CC BY 2.0
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Author : JD Hancock
Licence : CC BY 2.0
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Author : Thomas Leth-Olsen
Licence : CC BY 2.0
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Author : Bryan Ledgard
Licence : CC BY 2.0
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Author : Jiuguang Wang
Licence : CC BY-SA 2.0
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Author : Austin Kirk
Licence : CC BY 2.0
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Author : Leonardo Veras
Licence : CC BY 2.0
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Author : lee roberts
Licence : CC BY-SA 2.0
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Author : Andrés Nieto Porras
Licence : CC BY-SA 2.0
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