Added query_max_memory session property. Note: this session property cannot
increase the limit above the limit set by the query.max-memory configuration option.
Fixed task leak caused by queries that finish early, such as a LIMIT query
or cancelled query, when the cluster is under high load.
Added task.info-refresh-max-wait to configure task info freshness.
Add support for DELETE to language and connector SPI.
Reenable error classification code for syntax errors.
Fix out of bounds exception in lower() and upper()
when the string contains the code point U+10FFFF.