• Test::Builder now has a create() method which allows you to create
  a brand spanking new Test::Builder object.
  
• require_ok() was not working for single letter module names.
  
• isdeeply() and eq* now work with circular scalar references
  (Thanks Fergal)
  
• Use of eq_* now officially discouraged.
  
• Removed eq_* from the SYNOPSIS.
  
• is_deeply(undef, $not_undef); now works. [rt.cpan.org 9441]
  
• is_deeply() was mistakenly interpeting the same reference used twice
  in a data structure as being circular causing failures.
  [rt.cpan.org 11623]
  
• Loading Test::Builder but not using it would interfere with the
  exit code if the code exited. [rt.cpan.org 12310]
  
• is_deeply() diagnostics now disambiguate between stringified references
  and references. [rt.cpan.org 8865]
  
• Files opened by the output methods are now autoflushed.
  
• todo() now honors $Level when looking for $TODO.