Making PBR Materials 3

PBR Materials 3 add-on update includes the following changes:

All materials are Principled based except for Translucent and Volume materials
Removed Light materials
Added: Cloth, Particles, Velvet, Light dielectrics and Gallium, Molybdenum, Pewter, Rhodium, Tin, Vanadium, Zinc, Pot metals
Fixed error when there is no material in the slot
Removed Textures button
Auto Updater