Merge pull request #110 from SylvainCorlay/jlab-1.0

Update to jupyterlab 1.0

Author: SylvainCorlay

js/package.json

@@ -27,7 +27,7 @@
     "webpack": "^3.5.5"
   },
   "dependencies": {
-    "@jupyter-widgets/base": "^1.1.0",
+    "@jupyter-widgets/base": "^1.1.0 || ^2.0.0",
     "css-loader": "^3.0.0",
     "lodash": "^4.17.4",
     "style-loader": "^0.23.1"