https://github.com/xero/leviathan-crypto v3 new new: AES-GCM-SIV, MerkleLogs, cSHAKE, KMAC, BLAKE3, streaming SHA-3 variants, & new 22 signature suites across 6 families (pure,prehash, & Ed25519ph modes): ML-DSA, SLH-DSA, Ed25519, ECDSA-P256, classical+PQ hybrids, & PQ-only composites.