Update Jade to 1.8.2

I have a very similar bug to #9 that is caused by this specific markup

```jade
script.
	(function () {
		if (anyVariable) {}
		// any comment
	})();
```

It's fixed by simply bumping Jade to [0.35.0](https://github.com/jadejs/jade/releases), which is exactly the next version.

I also tried 1.8.2 and the whole build works fine too, so we might as well update Jade to that.