v32

-New features:
-Optimizer: Float and Texture properties now defined as preprocessor variables after each CGPROGRAM statement so Interpolator variables can be intelligently culled
-Optimizer: Generated shaders now don't sample the same texture used in more than one slot, assume it is sampled with the same UV mode and Tiling/Offset

-Changes:
-PBR/Shader Editor: LOD Crossfade option moved to Optimizer settings section
-Optimizer/Editor: Lock button GUI available as part of Optimizer, rather than the editor
-Optimizer: Generated shader naming scheme change - shaders now under 'Hidden' category

Fixes:
-PBR: Small bugfixes