DateTime-TimeZone 0.55

on Perl CPAN

• This release is based on version 2006o of the Olson database.
  

0.54 2006-10-25

• Got rid of the STORABLE_attach methods. This was causing bugs when
  trying to freeze/thaw a DateTime.pm object, and I realized that
  because of how the DT::TimeZone internals work, there's not much
  gained by using STORABLE_attach instead of STORABLE_freeze. Even
  with STORABLE_freeze, the core data structures for a timezone are
  still shared.