Can't create command with alias to default command

[domdomegg]

Issue Type

• [x] Bug Report
• [ ] Feature Request
• [ ] Other

Expected

cli
  .command("something", "Do something")
  .alias("!")
  .action(async () => {
    console.log("Did something!");
  });

Should log 'Did something!' if you run cli something or cli

Actual

Only logs when running cli something

Possible Solutions

https://github.com/cacjs/cac/blob/abe662b577429b854b1eb6f811d828d23f21ce1c/src/CAC.ts#L200-L210 should use command.isDefaultCommand rather than the name.

We should also add documentation explaining the ! alias.

Info

• CAC version: 6.7.14
• Reproduction link: https://replit.com/@domdomegg/cac-151#index.js