title: sinon.stub() vs sinon.sandbox.stub()?
body: <p>Using <strong>sinon</strong> and <strong>sinon-qunit</strong> in our front end unit tests, and I'm struggling to understand the difference in these methods. We are using <code>sinon.sandbox.stub()</code> (literally that is the function, we do not create a sandbox) and these stubs are apparently restored after each test automatically. I just don't see this anywhere in the documentation. </p>
  
  <p>I wouldn't think that this method exists, I would think you would need to explicitly create a sandbox using <code>sinon.sandbox.create()</code>. On that sandbox object you would call the stub function, <code>i.e. mySandbox.stub()</code>, not <code>"sinon.sandbox.stub()"</code>. </p>
  
  <p>Could anyone help me understand?</p>