Minor Dev Update

In preparation for the Interior Editor changes, I've had to make some modifications under the hood. A couple changes worth mentioning:

• You can now hold SHIFT and RMB in the editor to rotate the view
• I greatly optimized the interiors, to allow for more floors / more lights / etc.

As always, there will be bugs! But this update might lead to better performance for some people with slower CPUs so I thought I'd release it!