Enable xmlns:xsi

[mingpen]

No description provided.

[MarcelKarras]

This is already implemented inside the PR #201. (see this line)

Golang cannot decode xml namespaces atm, for this the SOAPEnvelope works with namespaces and the SOAPEnvelopeResponse without. With the PR mentioned above (already merged) it is possible to send requests to SOAP services that require namespaces. SOAP services that generate requests with prefixes are also supported by ignoring those prefixes inside the struct SOAPEnvelopeResponse. For the callee of the library methods nothing will change though except that more services will work with the library now.