old_contents: '''
  Stack
  ^^^^^
  
  .. autoclass:: Stack
     :members:
  
  '''
  from __future__ import absolute_import
  
  import redisext.models.abc
  
  
  class Stack(redisext.models.abc.Model):
      def pop(self):
          item = self.connect_to_master().lpop(self.key)
          return self.decode(item)
  
      def push(self, item):
          item = self.encode(item)
          return self.connect_to_master().lpush(self.key, item)
  
new_contents: '''
  Stack
  -----
  
  .. autoclass:: Stack
     :members:
  
  '''
  from __future__ import absolute_import
  
  import redisext.models.abc
  
  
  class Stack(redisext.models.abc.Model):
      def pop(self):
          '''
          Pop item from stack.
          '''
          item = self.connect_to_master().lpop(self.key)
          return self.decode(item)
  
      def push(self, item):
          '''
          Push item into queue.
  
          :returns: number of items in queue
          :rtype: int
          '''
          item = self.encode(item)
          return self.connect_to_master().lpush(self.key, item)
  
subject: add stack docs