old_contents: import sys
  """
  Shamelessly ripped off of py.std
  """
  __version__ = '0.5.0'
  
  class Std( object ):
      def __init__( self ):
          self.__dict__ = sys.modules
      def __getattr__( self, name ):
          m = __import__(name)
          return m
  
  std = Std()
  
new_contents: import sys
  """
  Shamelessly ripped off of py.std
  """
  __version__ = '0.8.0'
  
  class Std( object ):
      def __init__( self ):
          self.__dict__ = sys.modules
      def __getattr__( self, name ):
          m = __import__(name)
          return m
  
  std = Std()
  
subject: Update version in bx/__init__.py