chacha20: rand_core v0.10.0-rc.4 + set_stream()/get_block_pos() change#500

tarcieri merged 7 commits intoRustCrypto:masterRustCrypto/stream-ciphers:masterfrom

nstilt1:stream_id_updatesnstilt1/stream-ciphers-rng:stream_id_updatesCopy head branch name to clipboard