Updated: ruby-bcrypt 3.1.18

[Daisuke Fujimura]

The following packages have been uploaded to the Cygwin distribution:

* ruby-bcrypt
* ruby-bcrypt-doc

Package summary
* https://cygwin.com/packages/summary/ruby-bcrypt-src.html

Changelog
* https://rubygems.org/gems/bcrypt

bcrypt() is a sophisticated and secure hash algorithm designed by The
OpenBSD project for hashing passwords. bcrypt-ruby provides a simple,
humane wrapper for safely handling passwords.