add vendor dir

add testing kdf param

update travis

add pageup/pagedown, remove vestigal code

update front-end, update readme, tweak KDF params

switch to chacha/argon2, update readme

improve timeout, exit concurrency in repl

fix timeout behavior

improve v.Close()

use os.stdin.fd for crypto/ssh/terminal input

lock deps

constant time copy, update README and LICENSE

replace entropy-mnemonics with pwgen

update readme

switch to /x/crypto/ssh/terminal