chore(package): update url-loader to version 3.0.0

Closes #39

Author: greenkeeper[bot]

package.json

@@ -62,7 +62,7 @@
 				"stylelint": "^9.1.3",
 				"stylelint-config-standard": "^18.0.0",
 				"svg-inline-loader": "^0.8.0",
-				"url-loader": "^1.0.0",
+				"url-loader": "^3.0.0",
 				"webpack": "^4.0.0",
 				"webpack-cli": "^2.0.12"
 		},