LearnBoost/mongoose — pull request #1282 by mgrach (2013-01-11 06:30:18+00:00)
Title: Cast strings "true" and "false" to boolean

For solving this:
```js
var schema = new Schema({
title: String
, description: String
, published: Boolean
});

model.save(req.body /* { title: 'Test title', published: 'False' } */)

// Saved data
{ title: "Test title", published: true }
```