v3.1.18

[3.1.18] - 2022-05-10

Fixes

• Fix deprecated arg_enum! for users migrating to clap3 (#3717)
• Verify all required_unless_present_all arguments exist
• Verify group members exist before processing group members (#3711)
• (help) Use ... when not enough value_names are supplied

gated behind unstable-v4

• Verify required is not used with conditional required settings (#3660)
• Disallow more value_names than number_of_values (#2695)
• (parser) Assert on unknown args when using external subcommands (#3703)
• (parser) Always fill in "" argument for external subcommands (#3263)
• (derive) Detect escaped external subcommands that look like built-in subcommands (#3703)
• (derive) Leave Arg::id as verbatim casing (#3282)