Release 0.15.0

Release 0.15.0

Major Features and Improvements

• Added a tf.Example <-> Arrow coder.
• Added a tf.Example -> Dict[str, np.ndarray] coder (this is a legacy
  format used by some TFX components).
• Added some common Arrow utilities (tfx_bsl.arrow.array_util).
• Added a python class, tfx_bsl.beam.Shared that helps sharing a single
  instance of object across multiple threads.

Bug Fixes and Other Changes

Breaking Changes

Deprecations