Squares for square grids! [EXPERIMENTAL]

The new circles in the experimental UI are just bad. When you tile something in a square grid, you ideally want the tiles to be squares since it doesn’t leave a whole lot of empty space and generally looks nice. The circles just look odd where they’re placed right now in their square grids. Circular slots are best for when the slots themselves are arranged in a line/circle or in a hexagonal grid.

Also vertical connectors and stairs still aren’t in the game sadly