'Return all tags for this (this includes any tags added with :meth:`tag`,
and also all of the added measurements, bucketed into powers of 2).'

@property
def tags(self):

    return (['{}:{}'.format(name, round_power_2(size)) for (name, size) in self.measures] + ['{}:{}'.format(name, value) for (name, value) in self.added_tags])
