update changelog

Signed-off-by: Oleksii Moskalenko <moskalenko.alexey@gmail.com>

CHANGELOG.md

@@ -1,9 +1,10 @@
 # Changelog
 
-## [v0.2.12](https://github.com/feast-dev/feast-spark/tree/v0.2.12) (2021-08-17)
+## [v0.2.12](https://github.com/feast-dev/feast-spark/tree/v0.2.12) (2021-08-19)
 [Full Changelog](https://github.com/feast-dev/feast-spark/compare/v0.2.11...v0.2.12)
 
 **Implemented enhancements:**
+- Keep only unique entity rows in entity dataframe in historical retrieval job [\#93](https://github.com/feast-dev/feast-spark/pull/93) ([pyalex](https://github.com/pyalex))
 - Add checkpoint in each iteration of join loop (historical retrieval job) to truncate logical plan [\#92](https://github.com/feast-dev/feast-spark/pull/92) ([pyalex](https://github.com/pyalex))
 - Add persistent checkpoint in historical retrieval [\#91](https://github.com/feast-dev/feast-spark/pull/91) ([pyalex](https://github.com/pyalex))
 - Omit skewness in spark join by broadcasting entity dataframe [\#90](https://github.com/feast-dev/feast-spark/pull/90) ([pyalex](https://github.com/pyalex))