Feature: Add xml_tree_walker::out(const xml_node&) which is called after each node traversed#677

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nonwill:Feature__Add_xml_tree_walker__out(const_xml_node&)_which_is_called_after_each_node_traversednonwill/pugixml:Feature__Add_xml_tree_walker__out(const_xml_node&)_which_is_called_after_each_node_traversedCopy head branch name to clipboard