Release: 90 - Level of detail updates, fixes and optimizations — Boundless Steam update #667911

New Features: Options for EXTREME and ULTIMATE terrain detail levels for screen shots and power users. Added right click (left trigger or X on controller) to go backwards through a list in the options menu. Fixes: Fix lower level of detail meshes not showing user changes. Level of detail chunks with changes may take a while to regenerate. Fix F12 not taking screen shots on Steam client. Fix block-lighting updates on chunk deltas for Steam client. Fix emulated mouse with xbox-pad stopping when stick is not moving even if not at rest state. Fix new chunks not loading when switching terrain detail. Improve performance of block lighting for eg, lava oceans. Fix fogging of sky/sun in reflections causing sky/sun to be always be clearly visible. Fix cracks in geometry at y = 256 on chunk borders for both web and Steam client. Fix physics issue (falling through floor with prediction errors) at y...