add tag argument

Author: PythonFZ

examples/notebooks/Mapping_Molecules.ipynb

@@ -4222,7 +4222,7 @@
    "outputs": [],
    "source": [
     "bmim_bf4 = DataHub(\n",
-    "    url=\"https://github.com/zincware/DataHub/tree/main/Bmim_BF4\"\n",
+    "    url=\"https://github.com/zincware/DataHub/tree/main/Bmim_BF4\", tag=\"v0.1.0\"\n",
     ")\n",
     "bmim_bf4.get_file()\n",
     "bmim_file = bmim_bf4.file_raw"
@@ -5171,4 +5171,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 5
-}
+}