Don't return due dates for enrollments created after course end
1.2.4
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Updates function in API for finding learners with a specific Schedule that has an assignment on a given day, to also be inclusive of absolute date schedules (everyone active in the course without an override).
1.2.3
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* Dropped support for Django versions below 2.2 * Added support for python 3.8
1.1.4
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* Drop the active index from ContentDate. It has low cardinality and Aurora was doing a lot of extra work to try to do an intersect query with that and the course_id index, when using the latter by itself would be far more efficient.
1.1.3
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* Use memcache to cache ContentDate information in get_dates_for_course