fix text on sorted dict

Author: despadam

12_functions_advanced.ipynb

@@ -1024,7 +1024,9 @@
     "Let's see how we can created a \"sorted dictionary\".\n",
     "Recall that a dictionary is an **unordered collection**, so it doesn't have a built-in order.\n",
     "\n",
-    "_(Well, that's not completely true. The most recent versions of Python store the key-value pairs in the order they are entered or supplied.\n",
+    "_(Well, that's not completely true.\n",
+    "Regarding insertion order, up until Python 3.5 dictionaries were unordered.\n",
+    "Starting from Python 3.6 dictionaries remember the order of items inserted.\n",
     "The thing is: accessing a dictionary **by index** doesn't make sense.)_"
    ]
   },