Update #4 - v1.839

As promised this update includes the following changes: [list] [*]an additional harder AI for skirmish [*]new rocket soldier type with target following rockets [*]option to quickly restart a finished game [*]a defense building can be constructed in parallel with another building [*]pressing unit group hotkeys twice will jump the camera to the next unit in the group [*]double clicking on a unit will select all units with the same type in the sight of the camera [*]shift/alt + drag selection won't reset previous unit selections [*]Japanese comic localization fixes [/list]