[go-nuts] "break" inside switches and loops

  The reason I think it is a worthwhile addition is that it reduces
"indentation" level. In your "if-else" you quickly run into cases where
you have 5 nested ifs, if you have no way of getting out of the "case".
With "break", you can do what you want and "return" early. That way you
don't stack up your ifs, making the code easier to read, similar to how Go
promotes "return early on errors".