News for this Update, again mostly internal updates:
- Spent a lot of time stabilizing the Multithreaded systems on the client and server. Which is like balancing on a rope 
- Had to do some rewriting on how chunks are generating, which makes lighting easier
- Completed Sunlight calculations, which means the terrain generator finally generates shadows in caves and und overhangs again
Here's how the terrain now looks like with shadows. Some shadows are still glitchy.
Pictures: https://imgur.com/a/ry7Fl