Merge pull request microsoft#107 from apust/upgrade-vscode-css-languageservice-version

Upgrade vscode-css-languageservice to 4.0.2

Author: mjbvz

package-lock.json

@@ -21,7 +21,7 @@
   },
   "dependencies": {
     "typescript-template-language-service-decorator": "^2.2.0",
-    "vscode-css-languageservice": "^3.0.13",
+    "vscode-css-languageservice": "^4.0.2",
     "vscode-languageserver-types": "^3.13.0",
     "vscode-emmet-helper": "1.2.11"
   },