- In addition to sodium_bin2hex(), sodium_hex2bin() is now a constant-time function. - crypto_stream_xsalsa20_ic() has been added. - crypto_generichash_statebytes(), crypto_auth_*_statebytes() and crypto_hash_*_statebytes() have been added in order to retrieve the size of structures keeping states from foreign languages. - crypto_box_seal() and crypto_box_seal_open() have been added.