title: what happend to tensorflow ScaleAndShift from r0.12?
body: <p>I am currently using tensorflow version 1.0.0, and trying to use a code from tensorflow r0.12 where I used a ScaleAndShift like this</p>
  
  <pre><code>    from tensorflow.contrib.distributions import TransformedDistribution
      from tensorflow.contrib.distributions.python.ops.bijector import ScaleAndShift
      td = TransformedDistribution( distribution=olde,bijector=ScaleAndShift(shift=30.0, scale=60.0))
  </code></pre>
  
  <p>According to API this is still possible with some little change. They provide this example :</p>
  
  <p><a href="https://www.tensorflow.org/api_docs/python/tf/contrib/distributions/TransformedDistribution?authuser=3" rel="nofollow noreferrer">https://www.tensorflow.org/api_docs/python/tf/contrib/distributions/TransformedDistribution?authuser=3</a></p>
  
  <pre><code>    ds = tf.contrib.distributions
      normal = ds.TransformedDistribution(
        distribution=ds.Normal(mu=0, sigma=1),
        bijector=ds.bijector.ScaleAndShift(loc=mu, scale=sigma, event_ndims=0),
        name="NormalTransformedDistribution")
  </code></pre>
  
  <p>However, I get this error message :</p>
  
  <pre><code>    &gt;&gt;&gt; ds.TransformedDistribution(
      ...   distribution=ds.Normal(mu=0., sigma=1.),
      ...   bijector=ds.bijector.ScaleAndShift(loc=mu, scale=sigma,   event_ndims=0),
      ...   name="NormalTransformedDistribution")
      Traceback (most recent call last):
        File "&lt;stdin&gt;", line 3, in &lt;module&gt;
      AttributeError: 'module' object has no attribute 'ScaleAndShift'
  </code></pre>
  
  <p>Which unfortunately seems quite consistent with the repo on git where I can't seem to find any such thing as ScaleAndShitf</p>
  
  <p>Any idea on what I'm doing wrong ?</p>
  
  <p>thanks for your help</p>