message: Fix UI min/max range for subsurface_anisotropy in Standard Surface
diff: doc="The mean free path. The distance which light can travel before being scattered inside the surface." />
  <input name="subsurface_scale" type="float" value="1" uimin="0.0" uisoftmax="10.0" uiname="Subsurface Scale" uifolder="Subsurface" uiadvanced="true"
  doc="Scalar weight for the subsurface radius value." />
  - <input name="subsurface_anisotropy" type="float" value="0" uimin="0.0" uimax="1.0" uiname="Subsurface Anisotropy" uifolder="Subsurface" uiadvanced="true"
  + <input name="subsurface_anisotropy" type="float" value="0" uimin="-1.0" uimax="1.0" uiname="Subsurface Anisotropy" uifolder="Subsurface" uiadvanced="true"
  doc="The direction of subsurface scattering. 0 scatters light evenly, positive values scatter forward and negative values scatter backward." />
  <input name="sheen" type="float" value="0" uimin="0.0" uimax="1.0" uiname="Sheen" uifolder="Sheen" uiadvanced="true"
  doc="The weight of a sheen layer that can be used to approximate microfibers or fabrics such as velvet and satin." />
  