Make `this` optional for private fields

I was wondering if it was possible to make the this in front of fields and methods inside of a class optional.

This would mean adding some clauses to the grammer, but I can't think of a reason why it should not be possible.

The main advantage of this is that it would be shorter code.

No, we explicitly decided to never do that when the #x in obj syntax proposal was advanced.

This is fair I hadn't thought that far ahead yet.