xml2array function problem

[romulodl]

I'm having a problem to deploy the new version of this library due an error call to \Silverpop\Util\xml2array. After looking the code I've seen some refactoring would be necessary.

I will raise a pull request (hopefully this week) to make the XML to Array and Array to XML manipulation better...

[rvarbanov]

@romulodl is that still an issue?