Fog rendering (including colored fog in maps in UDMF format).
Fixed lots of bugs in model loading and rendering.
Added "Toggle GZDoom Effects" button, which currently toggles dynamic lights, models and fog rendering.
Model loading process is more verbose now, so if something goes wrong, check Errors and Warnings window (F11) for details.
ColorPicker plugin:
You can now select surfaces in 3D-mode and then open Color Picker window to edit sector colors of sectors, to which these surfaces belong.
If nothing is selected, you can hilight a surface and then open Color Picker window to edit sector colors of sector, to which hilighted surface belongs.
If nothing is selected, you can hilight a Light Thing and then open Color Picker window to edit it's properties.
Increased dynamic lights rendering performance (currently I'm getting around 25 FPS in Spawn's MAP01 with 32 dynamic lights and rendering distance set to 3000, was getting 4-6 FPS in GZDoomBuilder 1.02).
Several fixes in animated lights rendering (secondary light radius can now be smaller than primary light radius, Pulse Light's maximum radius was rendered twise bigger than in GZDoom).
All dynamic light types are now rendered correctly.
Added Doom-style shading on walls (walls going from west to east are slightly darker than walls going from north to south)
Masked surfaces are now correctly lit by dynamic lights.
Fixed several bugs in models rendering.
