• fix bug in t/40reader.t revealed by a bugfix in Test::More 0.71 (Jonathan Rockway)
  
• fix possible SIGSEGV when PI's or attrs created with
  createDocument can get garbage-collected after their owning
  document (old-standing bug suddenly caught by XML::Compile regression tests)
  
• skip tests for unsupported features on unsupported versions of Perl/libxml2
  
• make Reader interface require Perl 5.8 (patches to extend to 5.6 are welcome)