new_contents: 
  
  class CenterpointAlgo:
      """super class of all centerpoint algorithms. Not stable yet."""
  
      def centerpoint(points):
          """
          Return the centerpoint of `points` or an approximation of it
  
          Parameters
          ----------
          points : array_like
              a sequence of n-dimensional points
  
          Examples
          --------
          >>> centerpoint([[1.0, 2.0, 5.0], [3.0, 4.0, 5.0], [1.0, 8.0, 4.0]])
          """
          pass
  
subject: add a super class of all centerpoints algorithms