TAJO-830: Some filter conditions with a SUBQUERY are removed by optimizer. (Hyoungjun Kim via hyunsik)

Closes #12
TAJO-834: Add Travis notification to issues@tajo.a.o and IRC. (hyunsik)
TAJO-699: Create a table using LIKE. (Prafulla T via hyunsik)

Closes #21
TAJO-851: Timestamp type test of TestSQLExpression::testCastFromTable fails in jenkins CI test. (Hyoungjun Kim via hyunsik)

Closes #23
TAJO-842: NULL handling in JDBC. (Hyoungjun Kim via jinho)

Closes #18
TAJO-842: NULL handling in JDBC. (fixed a missing log in CHANGES)
TAJO-846: Clean up the task history in woker. (jinho)

Closes #20
TAJO-793: CLI should be able to exit when single query is failed. (Hyoungjun Kim via jinho)

Closes #25
TAJO-854: Supports INSERT INTO with UNION. (Hyoungjun Kim via jihoon)
TAJO-849: Add Parquet storage to HCatalogStore. (jaehwa)
TAJO-762: Implements current date/time function (Hyoungjun Kim via hyunsik)

Closes #16
TAJO-863: Column order mismatched in the JOIN query with asterisk selection. (Hyoungjun Kim via hyunsik)

Closes #31
TAJO-843: implements COALESCE for BOOLEAN, DATE, TIME, TIMESTAMP. (Hyoungjun Kim via hyunsik)

Closes #26
TAJO-860: Implements TRUNCATE table. (Hyoungjun Kim via hyunsik)
TAJO-860: Implements TRUNCATE table. (missed github closes)

Closes #29, #24.
TAJO-868: TestDateTimeFunctions unit test is occasionally failed.

Closes #34
TAJO-844: JDBC should be support getTime, getDate, and getTimestamp. (Hyoungjun Kim via hyunsik)

Closes #19
Closes #24
TAJO-859: Update site for new committer Alvin Henrick. (hyunsik)

Closes #27
TAJO-840: Improve query result print with counting empty table. (jaehwa)