• Improved handling of HTML encoded surrogate pairs and illegally
  encoded Unicode; http://rt.cpan.org/Ticket/Display.html?id=7785.
  Patch by John Gardiner Myers jgmyers@proofpoint.com.
  
• Avoid generating bad UTF8 strings when decoding entities
  representing chars beyond #255 in 8-bit strings. Such bad
  UTF8 sometimes made perl-5.8.5 and older segfault.
  
• Undocument v2 style subclassing in synopsis section.
  
• Internal cleanup: Make 'gcc -Wall' happier.
  
• Avoid modification of PVs during parsing of attrspec.
  Another patch by John Gardiner Myers.