Do not override the preprocess_cell (previously from nbconvert) anymore but use the one from nbclient, checking the execute_reply after execution
Do not override the preprocess_cell (previously from nbconvert) anymore but use the one from nbclient, checking the execute_reply after execution

jhamrick/nbgrader,jupyter/nbgrader,jupyter/nbgrader,jupyter/nbgrader,jhamrick/nbgrader,jhamrick/nbgrader,jupyter/nbgrader,jhamrick/nbgrader,jupyter/nbgrader