replaced with by writing regular Python functions. Using the `tf.function`
    decorator, such functions can be turned into graphs which can be executed
    remotely, serialized, and optimized for performance.
*   Unification of `tf.train.Optimizers` and `tf.keras.Optimizers`. Use
    `tf.keras.Optimizers` for TF2.0. `compute_gradients` is removed as public
    API, use `GradientTape` to compute gradients.

position so that the document size can be calculated excluding\n  // the size of the popper element itself\n  const transformProp = getSupportedPropertyName('transform');\n  const popperStyles = data.instance.popper.style; // assignment to help minification\n  const { top, left, [transformProp]: transform } = popperStyles;\n  popperStyles.top = '';\n  popperStyles.left = '';\n  popperStyles[transformProp] = '';\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n...