for-loop labels cannot be renamed

I'm using tsc 2.0.0 in vs 2015 (with update 3 installed) and trying to rename a for-loop label:

``` ts
loop: for (const item of items) {
  for (let i = 0; i < n; i++) {
    if (test(i, item))
      continue loop;
  }
}
```

The ts language service says "You cannot rename this element." However when I click on the `loop` label, it correctly highlights all its occurrences.
