v5.4.0

New features and improvements:

• Task UIDs are in form {root_uid}:task_uid so we can inspect task tree status without fetching all tasks from Redis. This change should give essential performance gain when there are lots of pending tasks in queues (by @psrok1 in #255)
• Removed orjson to json fallback (by @psrok1 in #257)

Bugfixes:

• Fix Task.unserialize docs suggesting that orjson is optional dependency (by @psrok1 in #256)

Full Changelog: v5.3.4...v5.4.0