Generated new code and added initial data handling

BlendFile/DNA/BrightContrastModifierData.cs

@@ -21,6 +21,11 @@ namespace BlendFile.DNA {
         public float bright;
         [DNAFieldAttribute(2, "float", "contrast", 4)]
         public float contrast;
+        public BrightContrastModifierData() {
+            this.modifier = default;
+            this.bright = default;
+            this.contrast = default;
+        }
         public BrightContrastModifierData(SequenceModifierData modifier, float bright, float contrast) {
             this.modifier = modifier;
             this.bright = bright;