#780 Add Yanga Robot Detection

[philwo]

Hi,

could you please add detection for the Yanga Robot? The User-Agent is "Yanga WorldSearch Bot v1.1/beta (http://www.yanga.co.uk/)"

Thank you.

[Alexander Wolf]

This small patch add Yanga Bot detection:

360d359
< 'yanga',
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< 'yanga', 'Yanga WorldSearch Bot'

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