Version 0.12.0

Major Features and Improvements

• Add support for declaring sparse features.
• Add support for schema diff regions.

Bug Fixes and Other Changes

Breaking changes

Deprecations

Major Features and Improvements

• Adding functionality for handling structured data.

Bug Fixes and Other Changes

• StructStatistics.common_statistics changed to
  StructStatistics.common_stats to agree with Facets.

Breaking changes

• The change from StructStatistics.common_statistics to
  StructStatistics.common_stats may break code that had this field set and
  was serializing to some text format. The wire format should be fine.

Anomaly detection protos added.
Aligned protobuf version with Tensorflow Transform and Tensorflow.