Prototype version 0.4

In version 0.4, I've changed the graphics around, replacing the old top-down 2d tile view with a "paper 3d" type look where the floors are horizontal but the other objects are vertical. I've also fixed the problem with the input text field that wasn't letting you paste an Ink script into it. The problem was that Unity officially doesn't support that because of "security reasons" but also at the same time allows third party packages to go around the limitation anyway. So I installed a third party package, defeating the security that the Unity team was trying to have. I'm confused but at least it seems to work now, so any aspiring interactive fiction writers can experiment.