remove the preview flag for the extension as Yarn is now quite stable.

sandorfr · sandorfr · commit 8f4670e1f9af · 2017-10-12T11:21:42.000+02:00
diff --git a/configuration.json b/configuration.json
@@ -4,8 +4,7 @@
             "Name": "production",
             "VssExtensionIdSuffix": "",
             "VssExtensionGalleryFlags": [
-                "Public",
-                "Preview"
+                "Public"
             ],
             "DisplayNamesSuffix": "",
             "TaskIds": {
