Fix the combination of updating a table which contains an LOB, and reading from the LOB at the same time.
Previously it would throw an exception, now it works.

Use a weak dependency to the JTS jar file (allow to use H2 without the JTS jar file in the classpath)

Use a weak dependency to the JTS jar file (allow to use H2 without the JTS jar file in the classpath)

Save some memory. There is no need to store a dataType field in the AggregateData structure when we can just pass it down.