Update 1.8.19

We've implemented some community-reported fixes in the latest update:

• New: There is a new Rotation Sensitivity Multiplier option (in Menu -> Options -> Gameplay).
• Fix: We have fixed performance issues related to the Ultra and High settings.
• Fix: Improved lighting at level 8.
• Fix: From now on, on failure, the screen first dims and then reloads the level - protects against a sudden and disruptive drop in game performance.
• Adjustment: The elapsed time reminder now starts at the last 1m 30s, up from 30s.