downgrade style-loader

Author: Irfan Maulana

.gitignore

@@ -6,3 +6,4 @@ test/coverage
 yarn-error.log
 reports
 .idea/*
+test/dist

package.json

@@ -89,7 +89,7 @@
     "rollup-plugin-vue": "^2.3.0",
     "sinon": "4.1.2",
     "sinon-chai": "^2.14.0",
-    "style-loader": "^0.19.0",
+    "style-loader": "0.17.0",
     "stylefmt": "^6.0.0",
     "stylelint": "^8.3.1",
     "stylelint-config-standard": "^18.0.0",