`tf.data.Dataset.enumerate`.
    *   Promoting `tf.data.experimental.unbatch` to core as
        `tf.data.Dataset.unbatch`.
    *   Adds option for introducing slack in the pipeline to reduce CPU
        contention, via `tf.data.Options().experimental_slack = True`
    *   Added experimental support for parallel batching to `batch()` and
        `padded_batch()`. This functionality can be enabled through
        `tf.data.Options()`.

  -  Remove already deprecated options `resyncperiod` and `upstream` in the Kubernetes plugin.
  -  Includes Prometheus metrics name changes (to bring them in line with standard Prometheus metrics naming convention). They will be backward incompatible with existing reporting formulas that use the old metrics' names.
  -  The federation plugin (allows for v1 Kubernetes federation) has been removed.

Additionally, a background task is normally an independent set of logic that should be handled separately, with its own resources (e.g. its own database connection).

dsbyte contains the "domain separation" bits and the first bit of // the padding. Sections 6.1 and 6.2 of [1] separate the outputs of the // SHA-3 and SHAKE functions by appending bitstrings to the message. // Using a little-endian bit-ordering convention, these are "01" for SHA-3 // and "1111" for SHAKE, or 00000010b and 00001111b, respectively. Then the // padding rule from section 5.1 is applied to pad the message to a multiple // of the rate, which involves adding a "1" bit, zero or more "0"...