Starcounter-Jack/JSON-Patch — pull request #36 by jmeas (2014-06-20 06:04:15+00:00)
Title: Handles undefined values.

A first stab at resolving #32. Will need tests. Just opening a PR to start the discussion.

To test:

```js
// Errors on master branch.
var object = {
test: undefined
};

var observer = jsonpatch.observe(object);
var result = jsonpatch.generate(observer);
```