Improved atmosphere brightness near the terminator (day/night not the other kind) and various related bugs.
Improvements/Bug fixes:
- Atmosphere is now consistent with scale changes and location.
- Pluto and other tall/sparse atmospheres working correctly.
- Auto-Tour now shows spacecraft at 1:1 scale.
- Smoother changes for stellar object text size when passing stars.
- Better altitude ray-casting protection when regenerating terrain.