When to shallow copy?

[xhliu]

Explain when, otherwise users do NOT know.

Sometimes, if you only want to do a shallow copy of some properties, you can pass in the property names as an optional argument like this:

let nextInstance = instance.next([‘prop1’, ‘prop2’]);

[xhliu]

What's the difference?

let nextInstance = instance.next();
// vs 
let nextInstance = instance;

[yusufidimaina9989]

Done. https://github.com/sCrypt-Inc/scryptTS-docs/pull/231