MySQL compatibility: support REPLACE INTO as an alias for MERGE INTO.
it has recently been implemented

Issue 517: Create or replace view statement has no effect on the others already existing JDBC connection    

Issue 518: java.sql.Connection.commit() freezes after LOB modification with EXCLUSIVE connection    

Improve error message when dropping an index that belongs to a constraint, specify constraint in error message.

For in-memory databases, queries with a "group by" column that is also a hash index threw a RuntimeException.

    Make ValueGeometry#getDimensionCount more reliable.
    Add unit test to check for illegal ValueGeometry comparison
    Add unit test for conversion of Geometry object into Object
    Add optional export to MANIFEST.MF for JTS Geometry classes
    Validate that geometry values can be represented in WKB.

Fix bug with ALLOW_LITERALS=NONE, where the periodic analyze table on insert would throw an exception.

Make org.h2.util.ScriptReader throw a better exception when handling broken scripts which generate extremely large statements.