Updating WebService::Validator::CSS::W3C

Hi Bjoern,

Discussing with the author of the BBEdit CSS Syntax Checker, I realized 
that the documentation for WebService::Validator::CSS::W3C stated that 
the CSS validator's SOAP API was experimental and unstable, which was 
true a year ago, less so now I think. Also, since the API has recently 
been updated (new namespaces, new error case handling), maybe an update 
of the perl module would be in order.

Yves, could you give Bjoern details of the changes?

Thanks,
-- 
olivier