Test vectors for sparse tree hashing (#614)
Test vectors for sparse tree hashing (#614)

Contributes to #613
gdbelvin/keytransparency,alsophian/keytransparency,cesarghali/keytransparency,gdbelvin/keytransparency,google/keytransparency,AMarcedone/keytransparency,AMarcedone/keytransparency,google/keytransparency,alsophian/keytransparency,cesarghali/keytransparency