`disablecocoascriptpreprocessor` leads `Error` to lose it's stack traces
Hi @bomberstudios:

When I set `disablecocoascriptpreprocessor` to true in the `manifest.json`, the `error` which is the instance of `Error` will lose it's stack traces.

Is it a bug? Or you guys have other considerations？

> Link to [disablecocoascriptpreprocessor-and-error-stack](http://sketchplugins.com/d/265-disablecocoascriptpreprocessor-and-error-stack).

