lms/djangoapps/certificates/tasks.py

lms/djangoapps/grades/tasks.py

openedx/core/djangoapps/content/course_overviews/tasks.py

...ps/schedules/management/commands/tests/send_email_base.py

...ules/management/commands/tests/test_send_course_update.py

...s/management/commands/tests/test_send_upgrade_reminder.py

...goapps/schedules/management/commands/tests/upsell_base.py

openedx/core/djangoapps/schedules/tasks.py

requirements/edx/base.txt

requirements/edx/github.txt