resource reads to occur in parallel and synchronizing only on writes.
    *   Fix execution order of multiple stateful calls to `experimental_run_v2`
        in `tf.function`.
    *   You can now iterate over `RaggedTensors` using a for loop inside
        `tf.function`.
*   `tf.lite`:
    *   Migrated the `tf.lite` C inference API out of experimental into lite/c.