message: Adding note on model subclassing vs sequential
diff: "source": [
  "## Create the models\n",
  "\n",
  - "We will use tf.keras [model subclassing](https://www.tensorflow.org/guide/keras#model_subclassing) to define the generator and discriminator. We will create layers in the *init* method, and define the forward pass in the *call* method."
  + "We will use tf.keras [model subclassing](https://www.tensorflow.org/guide/keras#model_subclassing) to define the generator and discriminator. We will create layers in the *init* method, and define the forward pass in the *call* method. Note, we could write these models more compactly using the [Sequential API](https://www.tensorflow.org/guide/keras#sequential_model), e.g., \n",
  + "\n",
  + "```def make_generator_model():\n",
  + " return tf.keras.Sequential([\n",
  + " tf.keras.layers.Dense(7*7*64, use_bias=False),\n",
  + " tf.keras.layers.BatchNormalization(),\n",
  + " ...])```\n",
  + " \n",
  + "In this case we've used model subclassing, in order to have another example of that style available."
  ]
  },
  {
  