Patch 0.9.0 - Major engine upgrade and EMP missiles — ASTROKILL Steam update #945715

Gameplay - Added new EMP missile that temporarily shuts down fighters and turrets - Created new Dominion-freighter variations - Added Dominion-freighter activity to applicable levels - Converted Menace mission to a campaign-mission - Added some radio-dialog to Menace mission (sets up future mission) - Converted Banshee Inspection mission to a standalone mission - Increased pacing of Maki Transit mission - Added Lancer-EMP and Lancer-Medic-EMP gunship variations - Added Phantom-EMP fighter variation - Fixed initial trajectories for playable fighters in most missions Core - Upgraded Unreal engine to 4.17.0 (from 4.8.3) - Builds are no longer packaged in PAK files - All objects are now visually culled at long-ranges - Added concept of electrical-power to all ships (for EMP) - Moved save-game logic to a game-instance object - Decoupled many ojects from one another and removed some circular d...