Reset stream.root after emitting it

[santigimeno]

• This was causing the emission of incorrect objects after an error (see test case).

[santigimeno]

Related to this change: in the case of a stream with garbage between 2 correct JSON objects, should we try to recover from the error and try to emit the 2 objects of just emit the error and close the stream?

[dominictarr]

I will merge this.

Hmm, I'm strongly inclined to just error cleanly.
whitespace between the objects is one thing,
but garbage is another thing.

I'd imagine that in most cases that garbage would be malformed JSON,
and it would be easier to fix if you got an error quickly. something like a '{'
in the garbage could change the meaning of the JSON.

However, if you did want to send JSON through a noisy channel,
@substack has this module: https://github.com/substack/json-scrape
which is targeted at that use-case.

[dominictarr]

merged into JSONStream@0.4.1