McMaster.Extensions.CommandLineUtils 2.3.0

Enhancements:

• Support the POSIX convention for cluster multiple options. For example, -ixd is treated the same as -i -x -d.
• @bjorg: support SingleOrNoValue notation. --option[:value]
• New type: Pager. Provides a simple interaction model for displaying console output in a pager.
• Display help text using the less pager on macOS/Linux.
• Make suggestions when invalid options or commands are used, but there is a valid one that is similar. (Thanks to @MadbHatter for doing the initial work on this.)
• Add support for subcommand aliases. Commands can be given multiple names.
• Obsolete the constructor of [Subcommand] which takes a string.
• Infer subcommand names from the type name
• @lvermeulen: Sort subcommands by name in help text. This can be disabled with DefaultHelpTextGenerator.SortCommandsByName.
• @jcaillon: Add API for UnrecognizedCommandParsingException which includes suggestions for similar options or commands.
• @TheConstructor: add CommandLineApplication.GetValidationResult()

Bugs fixed:

• Duplicate subcommand names used to cause undefined behavior. Now, attempting to add a duplicate subcommand name or aliases will cause the library to throw before the app can execute.
• Fix bug in subcommand name inference. When not specified, the subcommand always matched the entry assembly name. In this update, this convention only applies to the parent command.
• Add generic overloads of .IsRequired() for CommandOption<T> and CommandArgument<T>.
• @handcraftedsource: handled nested HelpOptions (fixes #86 - InvalidOperationException when multiple help options were defined)

See more details here: https://github.com/natemcmaster/CommandLineUtils/blob/master/CHANGELOG.md#v230