Update 2.6.5 - Improved Physics, Skybox and bugfixes

Improved physics for large parts. Levels like the Airplane/Titanic etc. now behave more realistically without exploding out uncontrollably.
Improved physics stability all round.
Improved friction physics, no more infinite rolling parts
Added new sitting mannequin. Populate your vehicles easily!
Add a real skybox, removed literal sky box for outdoor levels
Implement fighter jet's full flight control for Airplane level
Improved lighting for all levels
Upgrade to Unity 2019
Fixed scaling issues on Skyscraper and Titanic.
Fixed bullets hitting gun when moving forward quickly.
Fixed level time getting reset in some cases.
Computer GPU made easier to remove by grabbing the heatsink case
Fixed Rice cooker cover glitching if slow motion is active
Fixed Water heater hose detaching on start
Fixed Flashlight reading light still turning on when disassembled
Other minor bug fixes