update to latest pug package

Author: jwcooper

package.json

@@ -18,7 +18,7 @@
     "multer": "^1.3.0",
     "nedb": "1.8.0",
     "node-pty": "0.7.4",
-    "pug": "2.0.0-rc.4",
+    "pug": "2.0.0",
     "request": "2.83.0",
     "serve-static": "1.13.1",
     "validator": "9.4.0",