try to make nanovegawork better

dub.json

@@ -11,6 +11,7 @@
 		":nanovega": "*",
 		":email": "*",
 		":image_files": "*",
+		":png": "*",
 		":htmltotext": "*",
 		":dom": "*",
 		":characterencodings": "*",
@@ -84,12 +85,35 @@
 		},
 		{
 			"name": "image_files",
-			"description": "Image file format support - PNG read/write, JPEG, TGA, BMP, PCX, TGA, DDS read.",
+			"description": "Various image file format support - PNG read/write, JPEG, TGA, BMP, PCX, TGA, DDS read.",
 			"importPaths": ["."],
-			"targetType": "sourceLibrary",
+			"targetType": "library",
-			"dependencies": {"arsd-official:color_base":"*"},
+			"dependencies": {
-			"sourceFiles": ["image.d", "png.d", "bmp.d", "jpeg.d", "targa.d", "pcx.d", "dds.d"]
+				"arsd-official:color_base":"*",
+				"arsd-official:png":"*"
+			},
+			"dflags": [
+				"-mv=arsd.image=image.d",
+				"-mv=arsd.bmp=bmp.d",
+				"-mv=arsd.jpeg=jpeg.d",
+				"-mv=arsd.targa=targa.d",
+				"-mv=arsd.pcx=pcx.d",
+				"-mv=arsd.dds=dds.d"
+			],
+			"sourceFiles": ["image.d", "bmp.d", "jpeg.d", "targa.d", "pcx.d", "dds.d"]
 		},
+		{
+			"name": "png",
+			"description": "PNG file format support",
+			"importPaths": ["."],
+			"targetType": "library",
+			"dflags": ["-mv=arsd.png=png.d"],
+			"dependencies": {
+				"arsd-official:color_base":"*"
+			},
+			"sourceFiles": ["png.d"]
+		},
+
 		{
 			"name": "htmltotext",
 			"description": "HTML to plain text conversion",