BETA 0.62_V4.9.1 Spider Robot, New Camp NPC, Laser Cannon

-New Mech Boss: Spider Robot. Features a new model and attack style. -New Camp NPC: Technician. Offers Laser Pistol exchange. New Location: Weapon Testing Ground. -New Active Skill: Energy Focus Laser Cannon. -New Special Equipment: Laser Cannon (Obtainable through NPC exchange). -New Mech Weapon: Energy Focus Laser Cannon. -New Grenade Launcher: Malcolm Rotary Grenade Launcher. -Texture Editor now includes texture modification functionality. -Texture Editor now includes 'CTRL+Z' undo functionality. -Added letters from Kickstarter backers. -Fixed bugs with mech aiming and AI. -Fixed issue with blueprint placement alignment. -General performance optimizations. -Some new material-type items.