Fix deprecated use

Author: vidartf

examples/superellipsoid.ipynb

@@ -114,13 +114,13 @@
    "outputs": [],
    "source": [
     "from pythreejs import *\n",
-    "from ipydatawidgets import ConstrainedNDArrayWidget\n",
+    "from ipydatawidgets import create_constrained_arraywidget \n",
     "from IPython.display import display\n",
     "\n",
     "view_width = 600\n",
     "view_height = 400\n",
     "\n",
-    "coordinate_widget = ConstrainedNDArrayWidget(dtype='float32')(array=coords)\n",
+    "coordinate_widget = create_constrained_arraywidget(dtype='float32')(array=coords)\n",
     "\n",
     "surf_g = BufferGeometry(attributes=dict(\n",
     "    position=BufferAttribute(coordinate_widget),\n",