Loose Schema Navigator

Example usage

$data = <<<JSONSTR
{
	"foo":"123"
	"bar":{
		"baz": true,
		"buzz: "{\"abc\":\"xyz\"}"
	}
}
JSONSTR;

$nav = new Navigator($data);

$nav->foo->int() // 123
$nav->foo->string() // "123"
$nav->missingProp->int() // 0
$nav->misisngProp->int(-1) // -1
$nav->bar->baz->int() // 1
$nav->bar->baz->bool() // true
$nav->bar->buzz->string() //  "{"abc":"xyz"}"
$nav->bar->buzz->object() //  {"abc":"xyz"}
$nav->bar->buzz->abc->string() // "xyz"