In the old version (0.3), I found that if I use svg-sprite-loader at a PNG file, then the PNG will be convert to a svg with embedded BASE64 `<image>` tag. https://github.com/kisenka/svg-sprite-loader/blob/v0.3.1/lib/processings/raster-image-to-svg.js While in the latest version, this feature has been removed. I wonder how can I get the same functionality in version 3.2 ? Do I have to use anthor loader, just transform PNG to svg, like this: ``` PNG [Some loader]-> SVG svg-sprite-loader-> sprite.SVG ```