pin notebook == 6.4.0 until html styling again works in markdown

Author: gutow

requirements.txt

@@ -1,4 +1,5 @@
 jupyter>=1.0.0
+notebook==6.4.0
 jupyterPiDAQ>=0.7.3
 Algebra_with_SymPy>=0.9.0
 jupyter_Pandas_GUI

setup.py

@@ -18,6 +18,7 @@
     install_requires=[
         # 'python>=3.6',
         'jupyter>=1.0.0',
+        'notebook==6.4.0', # until html styling again works in markdown.
         'jupyterPiDAQ>=0.7.3',
         'Algebra_with_SymPy>=0.9.0',
         'jupyter_Pandas_GUI', # no version b/c should be imported by other pkg.