code: def get_contrib_features(project_root):
      
      # TODO Project should require ModuleType
      project = Project(project_root)
      contrib = project._resolve('.features.contrib')
      return _get_contrib_features(contrib)
docs: Get contributed features for a project at project_root
  
      For a project ``foo``, walks modules within the ``foo.features.contrib``
      subpackage. A single object that is an instance of ``ballet.Feature`` is
      imported if present in each module. The resulting ``Feature`` objects are
      collected.
  
      Args:
          project_root (str, path-like): Path to project root
  
      Returns:
          List[ballet.Feature]: list of Feature objects