GZDoomBuilder 1.03:

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).