* [Bug fix] Always, rather than selectively, retry failed database updates from Celery tasks
3.6.0
---------------------------
* [Enhancement] Allow nested blocks
3.5.1
---------------------------
* [Bug fix] Include suspended stacks in count to assess provider capacity and utilization
3.5.0
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* [Enhancement] Retry failed database updates from Celery tasks
3.4.2
---------------------------
* [Security fix] test: Require django>=1.11.27 (CVE-2019-19844) * [Enhancement] Bump XBlock 1.2 version to 1.2.9 * [Enhancement] Add Python 3.8 to test matrix
3.4.1
---------------------------
* [Bug fix] Use empty JSONFields instead of "null" * [Enhancement] Refactor stack state variables * [Bug fix] Add missing valid state, LAUNCH_TIMEOUT * [Enhancement] Show coverage report at test end * [Bug fix] Fix error handling when waiting for state change