v6.0.0

New in this release

• Move the command line interface within the core node-cipher package.
• Split README into two pieces: one for the CLI, and the other for the Node JS API.
• Change list() to listAlgorithms().
• add listHashes() public method to list all available HMAC hashes.
• Update tests to include these new methods.
• The CLI no longer accepts the input and output as options, but rather as arguments.
• The --iterations shorthand has been changed to -i
• Added tests to reflect the recent CLI changes.
• CLI is now using commander instead of yargs.
• Rewritten and more robust CLI code.
• Changed --list option to --algorithms.
• Added --hashes option.
• Added enc and dec aliases for encrypt and decrypt respectively.