+ o Removed the heartbeat message in DTLS feature.
+ o Added EVP_KDF, an EVP layer KDF API, and a generic EVP_PKEY to EVP_KDF
+ bridge.
+ o All of the low level MD2, MD4, MD5, MDC2, RIPEMD160, SHA1, SHA224,
+ SHA256, SHA384, SHA512 and Whirlpool digest functions have been
+ deprecated.
+ o All of the low level AES, Blowfish, Camellia, CAST, DES, IDEA, RC2,
+ RC4, RC5 and SEED cipher functions have been deprecated.