android-fresco-blur

实现网易云音乐图片高斯模糊，请更新 fresco 版本，内部已实现 BlurPostProcessor，使用方式如下：

ImageRequest request = ImageRequestBuilder.newBuilderWithSource(Uri.parse(SINGER_URL))
        .setPostprocessor(new BlurPostProcessor(10, this, 1))
        .build();

PipelineDraweeController controller = (PipelineDraweeController) Fresco.newDraweeControllerBuilder()
        .setImageRequest(request)
        .setOldController(mBlurView.getController())
        .build();

mBlurView.setController(controller);