new_contents: from raiden.network.transport.matrix.transport import (  # noqa
      MatrixTransport,
      UserPresence,
      _RetryQueue,
  )
  from raiden.network.transport.matrix.utils import (  # noqa
      join_global_room,
      login_or_register,
      validate_userid_signature,
  )
  
subject: Move matrix transport to own module, pull in raiden_libs matrix classes