Major Features and Improvements
* Adds element-wise scaling support to `scale_by_min_max_per_key`,
`scale_to_0_1_per_key` and `scale_to_z_score_per_key` for
`key_vocabulary_filename = None`.
Bug Fixes and Other Changes
* Depends on `tensorflow>=1.15.5,<2` or `tensorflow>=2.9,<2.10`
* Depends on `tensorflow-metadata>=1.9.0,<1.10.0`.
* Depends on `tfx-bsl>=1.9.0,<1.10.0`.
Breaking Changes
* N/A
Deprecations
* N/A