New API in libxml++ 2.24

Member xmlpp::Element::add_child_text (xmlpp::Node* previous_sibling, const Glib::ustring& content=Glib::ustring())
Member xmlpp::Element::add_child_text_before (xmlpp::Node* next_sibling, const Glib::ustring& content=Glib::ustring())
Member xmlpp::Node::add_child (xmlpp::Node* previous_sibling, const Glib::ustring& name, const Glib::ustring& ns_prefix=Glib::ustring())
Member xmlpp::Node::add_child_before (xmlpp::Node* next_sibling, const Glib::ustring& name, const Glib::ustring& ns_prefix=Glib::ustring())
Member xmlpp::SaxParser::parse_chunk_raw (const unsigned char* contents, size_type bytes_count)
Class xmlpp::Schema
Class xmlpp::SchemaValidator