Merge branch 'master' into layout

Runtime/painting/decoration_image.cs

             Rect centerSlice = null,
             ImageRepeat repeat = ImageRepeat.noRepeat,
             bool invertColors = false,
-            FilterMode filterMode = FilterMode.Point
+            FilterMode filterMode = FilterMode.Bilinear
         ) {
             D.assert(canvas != null);
             D.assert(rect != null);

Runtime/rendering/image.cs

             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool invertColors = false,
-            FilterMode filterMode = FilterMode.Point
+            FilterMode filterMode = FilterMode.Bilinear
         ) {
             this._image = image;
             this._width = width;

Runtime/ui/painting/canvas_impl.cs

             public int rtID;
             public int width;
             public int height;
-            public FilterMode filterMode = FilterMode.Point;
+            public FilterMode filterMode = FilterMode.Bilinear;
             public bool noMSAA = false;
             public Rect layerBounds;
             public Paint layerPaint;

Runtime/ui/painting/painting.cs

             return new _BlurImageFilter(sigmaX, sigmaY);
         }
 
-        public static ImageFilter matrix(Matrix3 transform, FilterMode filterMode = FilterMode.Point) {
+        public static ImageFilter matrix(Matrix3 transform, FilterMode filterMode = FilterMode.Bilinear) {
             return new _MatrixImageFilter(transform, filterMode);
         }
     }
 
         public float strokeMiterLimit = 4.0f;
 
-        public FilterMode filterMode = FilterMode.Point;
+        public FilterMode filterMode = FilterMode.Bilinear;
 
         public ColorFilter colorFilter = null;
 

Runtime/widgets/basic.cs

             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool invertColors = false,
-            FilterMode filterMode = FilterMode.Point
+            FilterMode filterMode = FilterMode.Bilinear
         ) : base(key) {
             this.image = image;
             this.width = width;

Runtime/widgets/image.cs

             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Point
+            FilterMode filterMode = FilterMode.Bilinear
         ) : base(key) {
             D.assert(image != null);
             this.image = image;
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Point,
+            FilterMode filterMode = FilterMode.Bilinear,
             IDictionary<string, string> headers = null
         ) {
             var networkImage = new NetworkImage(src, scale, headers);
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Point
+            FilterMode filterMode = FilterMode.Bilinear
         ) {
             var fileImage = new FileImage(file, scale);
             return new Image(
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Point
+            FilterMode filterMode = FilterMode.Bilinear
         ) {
             var image = scale != null
                 ? (AssetBundleImageProvider) new ExactAssetImage(name, bundle: bundle, scale: scale.Value)
             ImageRepeat repeat = ImageRepeat.noRepeat,
             Rect centerSlice = null,
             bool gaplessPlayback = false,
-            FilterMode filterMode = FilterMode.Point
+            FilterMode filterMode = FilterMode.Bilinear
         ) {
             var memoryImage = new MemoryImage(bytes, scale);
             return new Image(