TAJO-558: HCatalogStore can't scan columns. (jaehwa)
TAJO-560: CTAS PARTITION BY with UNION can cause invalid global plan. (hyunsik)
TAJO-520: Move tajo-core-storage to tajo-storage. (jinho)
TAJO-565: FilterPushDown rewrite rule does not push filters on partitioned scans.
TAJO-558: HCatalogStore can't scan columns. (adding missed file)