- Added a scheduled task to create or update billing for the month, yesterday is used to calculate the start and end date for the month.

- The new task has not been added to the beat application yet.
- Added an updated_at column to the monthly billing table, we may want to only calculate from the last updated date rather than the entire month.

migrations/versions/0110_monthly_billing.py

@@ -26,6 +26,7 @@ def upgrade():
                               postgresql.ENUM('email', 'sms', 'letter', name='notification_type', create_type=False),
                               nullable=False),
                     sa.Column('monthly_totals', postgresql.JSON(), nullable=False),
+                    sa.Column('updated_at', sa.DateTime, nullable=False),
                     sa.ForeignKeyConstraint(['service_id'], ['services.id'], ),
                     sa.PrimaryKeyConstraint('id')
                     )