• various fixes and improvements in the documentation
  
• added (convenient yet non-standard) methods nonBlankChildNodes,
  firstNonBlankChild, nextNonBlankSibling, prevNonBlankSibling
  that skip empty or whitespace-only Text and CDATA nodes
  
• exposed and documented external entity handler
  
• XPathContext can now be passed to toStringC14N and toStringEC14N
  (e.g. to provide NS mapping for the XPath expression)
  
• avoid using libxml2's globals (Nick Wellnhofer)
  
• added interface to libxml2's regexp implementation: XML::LibXML::RegExp
  
• added XML::LibXML->load_xml and XML::LibXML->loadhtml with
  uniform and cleaner API than the old parse* family
  
• cleanup code dealing with parsing flags
  
• fix bogus validation results if revalidating a modified document
  
• added 'eq' and 'cmp' overloading on XML::LibXML::Error and set fallback to 1
  
• lots of bugs fixed