[JDBC] JDBC 42.0.0 released

Notable changes

• Support for PostgreSQL versions below 8.2 was dropped
• java.util.logging is now used for logging: logging documentation
• Ensure executeBatch() can be used with pgbouncer. Previously pgjdbc could use server-prepared statements for batch execution even with prepareThreshold=0 (see issue 742)
• Replication protocol API was added: replication API documentation, GitHub PR 550
• Version bumped to 42.0.0 to avoid version clash with PostgreSQL version
• Error position is displayed when SQL has unterminated literals, comments, etc (see issue 688)

You may have noticed the change in the versioning of the driver, you can read the FAQ for more information.