Release 2.0 (NNCP)

Incompatible encrypted/eblob packet format changes. Older versions are not supported.
Twofish encryption algorithm is replaced with ChaCha20. It is much more faster. One cryptographic primitive less.
HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet another cryptographic primitive less (assuming that BLAKE2X is nearly identical to BLAKE2).