Update the package versions themselves

packages/console-extension/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@jupyterlab/console-extension",
-  "version": "0.8.3",
+  "version": "0.8.4",
   "description": "JupyterLab - Code Console Extension",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",

packages/notebook-extension/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@jupyterlab/notebook-extension",
-  "version": "0.8.3",
+  "version": "0.8.4",
   "description": "JupyterLab - Notebook Extension",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",

packages/notebook/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@jupyterlab/notebook",
-  "version": "0.8.3",
+  "version": "0.8.4",
   "description": "JupyterLab - Notebook",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",