TAJO-616: SequenceFile support. (jaehwa)
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)