Fixed #22172 -- Allowed index_together to be a single list (rather than list of lists)..

Thanks EmilStenstrom for the suggestion.

docs/ref/models/options.txt

@@ -340,6 +340,13 @@ Django quotes column and table names behind the scenes.
     This list of fields will be indexed together (i.e. the appropriate
     ``CREATE INDEX`` statement will be issued.)
 
+    .. versionchanged:: 1.7
+
+    For convenience, ``index_together`` can be a single list when dealing with a single
+    set of fields::
+    
+        index_together = ["pub_date", "deadline"]
+
 ``verbose_name``
 ----------------
 

docs/releases/1.7.txt

@@ -642,6 +642,9 @@ Models
   an error (before that, it would either result in a database error or
   incorrect data).
 
+* You can use a single list for :attr:`~django.db.models.Options.index_together`
+  (rather than a list of lists) when specifying a single set of fields.
+
 Signals
 ^^^^^^^