Program unknown argument

[KhalitovAdel]

I can start my jest tests with some arguments.
jest --color --someOtherArgs

In my test test I create:

const Maildev = require('maildev');
new Maildev();
...

I can see error: unknown argument --color for example.

This is throw from commander need additional flag .allowUnknownOption(true)

[KhalitovAdel]

#368