code: func SimpleProofsFromHashers(items []Hasher) (rootHash []byte, proofs []*SimpleProof) {
  	trails, rootSPN := trailsFromHashers(items)
  	rootHash = rootSPN.Hash
  	proofs = make([]*SimpleProof, len(items))
  	for i, trail := range trails {
  		proofs[i] = &SimpleProof{
  			Aunts: trail.FlattenAunts(),
  		}
  	}
  	return
  }
docs: // SimpleProofsFromHashers computes inclusion proof for given items.
  // proofs[0] is the proof for items[0].