Proxied object

[Richienb]

Would be nice if conf provided a proxy that allows the config to be accessed and set more easily. For example:

const {store} = new Conf();

store.a = 2;
store.a++;

console.log(store.a);
//=> 3

We'd probably need to assign it to a different name though.

[sindresorhus]

I did consider it in the past, but I decided not to as it would hide the fact that each mutation is a fairly expensive method call.