v0.11.0

• Implement nacl.sign.keyPair.fromSeed to enable creation of sign key pairs deterministically from a 32-byte seed. (It behaves like libsodium's crypto_sign_seed_keypair: the seed becomes a secret part of the secret key.)
• Fast version now has an improved hash implementation that is 2x-5x faster.
• Fixed benchmarks, which may have produced incorrect measurements.