Scheduling calculations no longer calculate from midnight and now handle a single 9-5 day as a duration of 1 day, as per industry standard practice.

.github/workflows/ci.yml

@@ -83,6 +83,7 @@ jobs:
           sudo /usr/bin/python -m pip install pytest
           sudo /usr/bin/python -m pip install isodate
           sudo /usr/bin/python -m pip install lark
+          sudo /usr/bin/python -m pip install networkx
 
       - name: Test
         run: |