ArgumentParser 1.1.0

Additions

• A command's run() method now supports async/await when the command conforms to AsyncParsableCommand. (#404)
• New API for distinguishing between public, hidden, and private arguments and option groups, and a new extended help screen accessible via --help-hidden. (#366, #390, and #405 through #413)
• You can now override the autogenerated usage string when configuring a command. (#400)

Changes

• ArgumentParser now requires Swift 5.5.

Fixes

• The auto-generated usage string now correctly hides all optional parameters when over the length limit. (#416)
• One @Option initializer now has its parameters in the correct order; the incorrect initializer is deprecated. (#391)
• Help flags are now correctly captured in .unconditionalRemaining argument arrays.
• Documentation fixes and improvements.

The 1.1.0 release includes contributions from @keith, @MartinP7r, @McNight, @natecook1000, @rauhul, and @zkiraly. Thank you!