The CategoryLogger has been extended with a 'when(condition)' static method. A call like CategoryLogger.when(ok).always().info("Ok"); is now possible. The HexDump class has been added to djutils to create hexadecimal dumps of data. Copyright message changed to 2019. The 'means' package has been added to the djutils project. Several classes from other projects that are heavily shared between the projects, but not specific for one of the projects have been transferred to the djutils project.