4.5

• @hhromic added an option to configure the batch size for JDBC Sink.
  A new batchLimit() method added to the JdbcSinkBuilder and the
  corresponding constructor arguments to the underlying implementation
  class and meta-suppliers.
• Limit parallel partition reads: In Map/Cache source, Jet tries to
  read all the partitions in parallel, which may lead to high memory
  usage. Now the max number of parallel reads is limited.
• Improve AggregateOperations.pickAny() by adding deduct
• Security updates: updated several libraries with identified security
  vulnerabilities.
• SQL: pre-existing ClassDefinition is no longer required for
  Portable serialization - if it does not exist, it's derived from the
  mapping columns.