declare minimum Node version

NodeJS versions prior to v14.13.0 do not support ESM (export keyword
syntax), which is used in this module.

Thus, this patch declares v14.13.0 as the minimum Node version.

package.json

@@ -59,9 +59,12 @@
     "bloggify.json",
     "bloggify/"
   ],
+  "engines": {
+    "node": ">=14.13.0"
+  },
   "blah": {
     "description": [
       "For low-level path parsing, check out [`parse-path`](https://github.com/IonicaBizau/parse-path). This very module is designed to parse urls. By default the urls are normalized."
     ]
   }
-}
+}