v15.1.0

Fixed

• accept uppercase E exponent in negative number arguments (#2544)
• support Unicode variadic option placeholders (#2615)
• increment node inspector port for --inspect-wait when spawn an executable subcommand (#2630)
• increment node inspector port for IPv6 hosts when spawn an executable subcommand (#2636)
• preserve the help option's group when a conflicting flag is hidden (#2637)
• global option values with unknown source should mask local option value source in cmd.getOptionValueSourceWithGlobals() (#2653)

Changed

• limit Pull Requests to reduce volume and improve quality (#2646)
• undeprecate InvalidOptionArgumentError (#2661)

Deprecated

• cmd.storeOptionsAsProperties() (#2561)
• cmd.combineFlagAndOptionalValue() (#2660)