-Improved: Terrains now have a bump texture again.
I also tweaked some texture settings so you're in for a surprise in some locations.
-New/Change: Added a tutorial section for learning about O2.
-Improved: Text centering for buttons is a little bit better overall.
note: ambient occlusion has recently broke for Linux OS users. I'm looking into this issue.
Consequence is lighting/shadowing will look bad if you're a Linux OS users.