Update 0.7

Update 0.7 released!

This was a huge performance update, where I optimized memory usage and culling.

+ Images are not all loaded into memory at once, instead, they are loaded as they come into view

+ Exhibits out of view no longer have their nameplates drawn, saving performance

+ Viewer Ai is a little more advanced, and there will be nuance in how they pick the images they view

- Culling might have performance drops when loading huge images onto screen dynamically