Set a name in the SlabDict.

        Args:
            name (str): The key name.
            valu (obj): A msgpack compatible value.

        Returns:
            None

def set(self, name, valu):
        '''
        Set a name in the SlabDict.

        Args:
            name (str): The key name.
            valu (obj): A msgpack compatible value.

        Returns:
            None
        '''
        byts = s_msgpack.en(valu)
        lkey = self.pref + name.encode('utf8')
        self.slab.put(lkey, byts, db=self.db)
        self.info[name] = valu