Added new stocking scope to shader gui;

Added new stocking surface feature;
Added unity 6.3 support;

Fixed the issue that ssr weight does not blend ibl and ssr properly;
Fixed the issue that material recive ssr regardless of specular ambient mode;

Runtime/Models/SurfaceFeature.cs

@@ -8,8 +8,8 @@ namespace Misaki.HdrpToon
     public enum SurfaceFeature
     {
         None = 0,
-        Stocking = 1 << 0,
+        AngelRing = 1 << 0,
         RimLight = 1 << 1,
-        AngelRing = 1 << 2
+        Stocking = 1 << 2,
     }
 }