Added hook to flush Jupyter notebook outputs

hooks/pre-commit

@@ -0,0 +1,13 @@
+#!/bin/bash
+for f in $(git diff --name-only --cached); do
+    if [[ $f == *.ipynb ]]; then
+        jupyter nbconvert --clear-output --inplace $f
+        git add $f
+    fi
+done
+
+if git diff --name-only --cached --exit-code
+then
+    echo "No changes detected after removing notebook output"
+    exit 1
+fi