Release v3.0.0

Changed

• the local subcommand now provides two options [--file, --buffer], the file path no longer needs to be specified via a separate argument
  • --file calculate a hash sum from a local file
  • --buffer calculate a hash sum from any given byte-buffer (e.g. String)
• Refactoring
• Update dependencies

Added

• Now the following hash algorithms are available:
  • SHA2-224
  • SHA2-384