add nbformat to requirements.txt

JaerongA · JaerongA · commit 2f38cfa099ab · 2023-03-15T19:23:05.000-05:00
diff --git a/requirements.txt b/requirements.txt
@@ -7,4 +7,5 @@ pyopenephys>=1.1.6
 seaborn
 scikit-image
 spikeinterface
-spikeextractors
+spikeextractors
+nbformat>=4.2.0
