v11.1.0

Added

• Option properties: envVar, presetArg (#48)
• Argument properties: argChoices, defaultValue, defaultValueDescription (#48)
• Command properties: options, registeredArguments (#50)

Changed

• commands property of Command is now readonly (#48)
• update peerDependencies to commander@11.1.x (#48)

Fixed

• remove unused Option.optionFlags property (#48)
• add that Command.version() can also be used as getter (#48)
• add null return type to Commands.executableDir(), for when not configured (#48)
• preserve option typings when adding arguments to Command (#49)