From 516e7e753bf34b8806523e6ac572c05dadf421fb 2014-11-01 23:40:58
From: MinRK <benjaminrk@gmail.com>
Date: 2014-11-01 23:40:58
Subject: [PATCH] source is required in all cells

---

diff --git a/IPython/nbformat/v4/v4.withref.json b/IPython/nbformat/v4/v4.withref.json
index bc4daad..6d382d8 100644
--- a/IPython/nbformat/v4/v4.withref.json
+++ b/IPython/nbformat/v4/v4.withref.json
@@ -72,7 +72,7 @@
             "description": "Notebook raw nbconvert cell.",
             "type": "object",
             "additionalProperties": false,
-            "required": ["cell_type", "metadata"],
+            "required": ["cell_type", "metadata", "source"],
             "properties": {
                 "cell_type": {
                     "description": "String identifying the type of cell.",
@@ -99,7 +99,7 @@
             "description": "Notebook markdown cell.",
             "type": "object",
             "additionalProperties": false,
-            "required": ["cell_type", "metadata"],
+            "required": ["cell_type", "metadata", "source"],
             "properties": {
                 "cell_type": {
                     "description": "String identifying the type of cell.",