title: sinon not stubbing property value
body: <p>I am using sinon v4.1.2. According to the documentation (<a href="http://sinonjs.org/releases/v4.1.2/sandbox/" rel="noreferrer">http://sinonjs.org/releases/v4.1.2/sandbox/</a>), I should be able to set a property using the following:  </p>
  
  <pre><code>sandbox.stub(myObject, 'hello').value('Sinon');
  </code></pre>
  
  <p>However, I am getting the error:</p>
  
  <blockquote>
    <p>Property 'value' does not exist on type 'SinonStub'</p>
  </blockquote>
  
  <p>What is the real way to do this? I looked through all the available functions, and tried <code>returnValue</code>, but that isn't a valid function either.</p>
  
  <p>The following was working on an older version of sinon:</p>
  
  <pre><code>sandbox.stub(myObject, 'hello', 'Sinon');
  </code></pre>