old_contents: from .fields import TimeZoneField     # noqa
  from .forms import TimeZoneFormField  # noqa
  
  __version__ = '1.0'
  
new_contents: __version__ = '1.0'
  __all__ = ['TimeZoneField', 'TimeZoneFormField']
  
  from timezone_field.fields import TimeZoneField
  from timezone_field.forms import TimeZoneFormField
  
subject: Add and __all__ designator to top-level