Encrypt and decrypt files using memory-hard password function

Current versions

scrypt requires the following formula to be installed:
openssl 1.0.2l SSL/TLS cryptography library

Formula history

ilovezfs Use “squiggly” heredocs.
ilovezfs scrypt: use assert_predicate instead of File.exist?
ilovezfs scrypt 1.2.1
Jaehoon You scrypt: add head
Dominyk Tiller scrypt: add test
Koen Rouwhorst scrypt 1.2.0
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
Mike McQuaid script: double-quotes and cleanup.
Dominyk Tiller scrypt: depend on Homebrew OpenSSL.