new_contents: """Kraken - traverser module.
  
  Classes:
  Traverser - Base Traverser.
  
  """
  
  from kraken.core.objects.scene_item import SceneItem
  from kraken.core.objects.object_3d import Object3D
  from kraken.core.objects.components.component import Component
  from kraken.core.objects.attributes.attribute_group import AttributeGroup
  from kraken.core.objects.constraints.constraint import Constraint
  from kraken.core.objects.operators.operator import Operator
  
  
  class Optimizer(object):
      """Kraken base traverser for any scene item.
  
      The optimizer iterates through all scene items and collapses resundancies by deleting items and rewiring connections.
  
      """
  
      def __init__(self, name='Optimizer'):
          pass
  
      def optimize(self):
          pass
  
subject: add optimizer