• interface to libxml2's pull-parser XML::LibXML::Reader
  (initiated by Heiko Klein)
  
• make error messages intended to the user report the line of the
  application call rather than that of the internal XS call
  
• XML::LibXML::Attr->serializeContent added (convenience function)
  
• fix getAttributeNode etc. w.r.t. #FIXED attributes (as well as some
  cases with old buggy libxml2 versions)
  
• warn if runtime libxml2 is older than the one used at the compile time
  
• if compiled against libxml2 >= 2.6.27, new parsehtml* implementation is used
  allowing encoding and other options to be passed to the parser
  
• DOM-compliant nodeNames: #comment, #text, #cdata, #document, #document-fragment
  
• toString on empty text node returns empty string, not undef
  
• cloneNode copies attributes on an element as required by the DOM spec