TAJO-730: Update Tajo site to reflect graduation.
Add missed ASF feather logo.
TAJO-714: Enable setting Parquet tuning parameters. (David Chen via hyunsik)
TAJO-709: Add .reviewboardrc and use rbt instead of post-review. (David Chen via hyunsik)
TAJO-735: Remove multiple SLF4J bindings message. (hyoungjunkim via hyunsik)
TAJO-729: PreLogicalPlanVerifier verifies distinct aggregation functions incorrectly. (hyunsik)
TAJO-725: Broadcast JOIN should supports multiple tables. (hyoungjunkim via jaehwa)
TAJO-739: A subquery with the same column alias caused planning error. (hyoungjunkim via hyunsik)
TAJO-738: NPE occurs when failed in QueryMaster's GlobalPlanner.build(). (hyoungjunkim via hyunsik)
TAJO-728: Supports expression IN statement. (hyunsik)
TAJO-356: Improve TajoClient to directly get query results in the first request. (hyunsik)
TAJO-736: Add table management documentation. (hyunsik)
TAJO-717: Improve file splitting for large number of splits. (jinho)
TAJO-743: Change the default resource allocation policy of leaf tasks. (jinho)
TAJO-563: INSERT OVERWRITE should not remove data before query success. (hyunsik)
TAJO-745: APIs in TajoClient and JDBC should be case sensitive. (hyunsik)
TAJO-215: Catalog should allow compatible types when finding functions. (Alvin Henrick via hyunsik)
TAJO-745: failure of INSERT INTO may remove the target table. (hyunsik)
TAJO-732: Support executing LINUX shell command and HDFS command. (hyoungjun kim via hyunsik)
TAJO-755: ALTER TABLESPACE LOCATION support. (hyunsik)