Merge pull request #519 from zjosua/lrnQueue

Fill _lrnQueue with tuples, not lists

pylib/anki/schedv2.py

@@ -549,6 +549,8 @@ limit %d"""
             % (self._deckLimit(), self.reportLimit),
             cutoff,
         )
+        for i in range(len(self._lrnQueue)):
+            self._lrnQueue[i] = (self._lrnQueue[i][0], self._lrnQueue[i][1])
         # as it arrives sorted by did first, we need to sort it
         self._lrnQueue.sort()
         return self._lrnQueue