McMaster.Extensions.CommandLineUtils 2.1.0

2.1.0: New features:

• Attributes. Simplify command line argument definitions by adding attributes to a class that represents options and arguments.
  • Options defined as [Option] or [Argument], [Subcommand].
  • Command parsing options can be defined with [Command] and [Subcmomand].
  • Special options include [HelpOption] and [VersionOption].
  • Validation. You can use [Required] and any other ValidationAttribute to validate input on options and arguments.
• Async from end to end. Using C# 7.1 and attribute binding, your console app can be async from top to bottom.
• Required options and arguments. Added CommandOption.IsRequired() and CommandArgument.IsRequired().

New API

• Prompt.GetYesNo, Prompt.GetPassword, and more. Added API for interactively getting responses on the console.
• Added OptionAttribute, ArgumentAttribute, CommandAttribute, SubcommandAttribute, HelpOptionAttribute, and VersionOptionAttribute.
• CommandLineApplication.Execute() - executes an app where TApp uses attributes to define its options
• CommandLineApplication.ExecuteAsync() - sample thing, but async.
• CommandLineApplication.ResponseFileHandling - the parser can treat arguments that begin with '@' as response files. Response files contain arguments that will be treated as if they were passed on command line.

Minor bug fixes:

• Add return types to .VerboseOption() and ensure .HasValue() is true when HelpOption or VerboseOption are matched
• Fix a NullReferenceException in some edge cases when parsing args
• Fix bug where DotNetExe.FullPath might return the wrong location of the dotnet.exe file