- Update to 3.1.19:
* Requirements: Now depends on Kombu 3.0.29.
* Requirements: Now depends on billiard 3.3.0.21.
* Results: Fixed MongoDB result backend URL parsing problem
(Issue celery/kombu#375).
* Worker: Task request now properly sets priority in
delivery_info.
* Beat: PyPy shelve may raise KeyError when setting keys (Issue
#2862).
* Programs: celery beat --deatched now working on PyPy.
* Results: Redis result backend now ensures all pipelines are
cleaned up.
* Results: Redis result backend now allows for timeout to be set
in the query portion of the result backend URL.
* Results: result.get now properly handles failures where the
exception value is set to None (Issue #2560).
* Prefork pool: Fixed attribute error proc.dead.
* Worker: Fixed worker hanging when gossip/heartbeat disabled
(Issue #1847).
* Results: MongoDB result backend now supports pymongo 3.x (Issue
#2744).
* Results: RPC/amqp backends did not deserialize exceptions
properly (Issue #2691).
* Programs: Fixed problem with celery amqp‘s basic_publish (Issue
#2013).
* Worker: Embedded beat now properly sets app for thread/process
(Issue #2594).
* Documentation: Many improvements and typos fixed.