Level Generation Speed Update

In this update, we focused on making the level generation faster. Currently it's about 3-4 times faster and there's still room for further optimizations. All updates: [list] [*]Big speed improvements to the level generator [*]Reworked artifact placement [*]Collecting all 5 artifacts now gives you a 10000 point bonus [/list] Please let us know if you encounter any issues with the level generation. Happy gliding!