Use let for class field declarations

[eladb]

This and a few conversations we've had around a more "functional" class declarations made me think that maybe we should consider using let for field definitions:

class Foo {
  let x: num;
  pub let y: str;
}

instead of:

class Foo {
  x: num;
  pub y: str;
}

Maybe this can even be used for methods:

class Foo {
  let myField: num;

  new() {
    
  }

  pub let myMethod = (x: str) => {
    return "this is a method";
  };
}

Thoughts?

[staycoolcall911]

The let feels redundant, but maybe I'm just used to how it is today. Can you elaborate on why you're considering adding it? Aesthetic reasons?