Upgrade to HSQLDB 2.5.1

See http://hsqldb.org/

Data cube support is the latest major feature in the new version, which follows other important features developed in recent years.

Temporal system-versioned tables keep all the data changes over time, allowing queries to view historic snapshots and, with PERIOD predicates, data changes over any period of time. Fine-grained row-level access control governs visibility and permissions on rows of data. Log-based synchronization keeps replicas in sync.

Support for Java 8 java.time classes in JDBC, table spaces for disk-based tables, UUID type for columns, SYNONYM for tables and functions, and auto-updated TIMESTAMP columns on row updates, are some of the recent features. Other features included: The ability to cancel long-running statements from JDBC as well as from admin sessions. UTF-16 file support for text table sources. MySQL compatibility for REPLACE, INSERT IGNORE and ON DUPLICATE KEY UPDATE statements.