Upgrade npm package as well

Author: amit1rrr

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@reviewnb/jupyterlab_gitplus",
-  "version": "0.1.3",
+  "version": "0.2.1",
   "description": "JupyterLab extension to create GitHub pull requests & commits.",
   "keywords": [
     "jupyter",
@@ -75,4 +75,4 @@
     "outputDir": "jupyterlab_gitplus/labextension"
   },
   "styleModule": "style/index.js"
-}
+}