SDK

The current streaming example doesn't implement the onerror() callback. In production this means that the subscriber can loose connection without knowing about it.

Currently the module field on package.json points to src/simpla.js but really it should point to a separate build, that's been transpiled, but not bundled. This means that whatever module bundling system consumers are using will still be used, but it won't need to be transpiled. As it currently stands, users can come up against [this bug](https://github.com/facebookincubator/create-react-app

Currently, JavaScript SDK logs status code 0 when the connection between the client and server cannot be resolved. This makes diagnosing network errors very difficult, as there are many different problems that can cause 0 status code in failing dependency calls.

The proposal is to log status code information that indicates whether a network error occurred and what type.