DocInherit is running into recursion depth for subclasses of the original converters -- temporary overwrite

nbconvert.py

@@ -44,6 +44,9 b' from IPython.utils import py3compat'
 # Utility functions
 #-----------------------------------------------------------------------------
 
+def DocInherit(f):
+    return f
+
 def remove_fake_files_url(cell):
     """Remove from the cell source the /files/ pseudo-path we use.
     """