Add sdk artifact for emulation test (#456)
Revise information log (#455)
Merge remote-tracking branch 'private/issue/455' into 0.7-develop
Merge remote-tracking branch 'private/issue/456' into 0.7-develop
Fixed project name (#456)
Memory leaks TestDriver with WindGate JDBC (#457).
Merge remote-tracking branch 'private/issue/456-M2' into 0.7-develop
Merge remote-tracking branch 'private/issue/457' into 0.7-develop
fix for findbugs (#459).
Merge remote-tracking branch 'private/issue/459-M3' into 0.7-develop
Bumped up document version to 0.7.2 (#458).
Revised configure-task-optimization document (#458).
Clarify error msg on testing w/ Direct I/O (#455).
Merge remote-tracking branch 'private/issue/455-M3' into 0.7-develop
Merge remote-tracking branch 'private/issue/458-M3' into 0.7-develop
Add start-guide for Windows (#458).
Update develop environment target platform (#458).
Merge remote-tracking branch 'private/issue/458-M4' into 0.7-develop
Supports Hive 0.14.0 for Direct I/O (#460).

* support parquet decimal/timestamp/char/varchar type.
Merge remote-tracking branch 'private/issue/460' into 0.7-develop