Convenient syntax for adding nodes with attributes

[alhirzel]

Would utility functions like the following be acceptable in this package?

function new_child2(xparent::XMLElement, name::AbstractString, attributes::LightXML.PairTypes...)
	element = new_child(xparent, name)
	set_attributes(element, Dict(attributes))
	return element
end

I foresee this coming in handy for new_child and create_root.