* First RQScheduler prototype

* WIP job scheduling

* Fixed Python 2.7 tests

* Added ScheduledJobRegistry.get_scheduled_time(job)

* WIP on scheduler's threading mechanism

* Fixed test errors

* Changed scheduler.acquire_locks() to instance method

* Added scheduler.prepare_registries()

* Somewhat working implementation of RQ scheduler

* Only call stop_scheduler if there's a scheduler present

* Use OSError rather than ProcessLookupError for PyPy compatibility

* Added `auto_start` argument to scheduler.acquire_locks()

* Make RQScheduler play better with timezone

* Fixed test error

* Added --with-scheduler flag to rq worker CLI

* Fix tests on Python 2.x

* More Python 2 fixes

* Only call `scheduler.start` if worker is run in non burst mode

* Fixed an issue where running worker with scheduler would fail sometimes

* Make `worker.stop_scheduler()` more resilient to errors

* worker.dequeue_job_and_maintain_ttl() should also periodically run maintenance tasks

* Scheduler can now work with worker in both burst and non burst mode

* Fixed scheduler logging message

* Always log scheduler errors when running

* Improve scheduler error logging message

* Removed testing code

* Scheduler should periodically try to acquire locks for other queues it doesn't have

* Added tests for scheduler.should_reacquire_locks

* Added queue.enqueue_in()

* Fixes queue.enqueue_in() in Python 2.7

* First stab at documenting job scheduling

* Remove unused methods

* Remove Python 2.6 logging compatibility code

* Remove more unused imports

* Added convenience methods to access job registries from queue

* Added test for worker.run_maintenance_tasks()

* Simplify worker.queue_names() and worker.queue_keys()

* Updated changelog to mention RQ's new job scheduling mechanism.

* Fix rq info not found workers information error, Fixes #1139

* Add test(#1149)

* rq info management command now cleans up registries when first run

* Deleted print statement

* Improve CLI test coverage

* Fixed CLI test on Linux

* Added FailedJobRegistry.

* Added job.failure_ttl.

* queue.enqueue() now supports failure_ttl

* Added registry.get_queue().

* FailedJobRegistry.add() now assigns DEFAULT_FAILURE_TTL.

* StartedJobRegistry.cleanup() now moves expired jobs to FailedJobRegistry.

* Failed jobs are now added to FailedJobRegistry.

* Added FailedJobRegistry.requeue()

* Document the new `FailedJobRegistry` and changes in custom exception handler behavior.

* Added worker.disable_default_exception_handler.

* Document --disable-default-exception-handler option.

* Deleted worker.failed_queue.

* Deleted "move_to_failed_queue" exception handler.

* StartedJobRegistry should no longer move jobs to FailedQueue.

* Deleted requeue_job

* Fixed test error.

* Make requeue cli command work with FailedJobRegistry

* Added .pytest_cache to gitignore.

* Custom exception handlers are no longer run in reverse

* Restored requeue_job function

* Removed get_failed_queue

* Deleted FailedQueue

* Updated changelog.

* Document `failure_ttl`

* Updated docs.

* Remove job.status

* Fixed typo in test_registry.py

* Replaced _pipeline() with pipeline()

* FailedJobRegistry no longer fails on redis-py>=3

* Fixes test_clean_registries

* Worker names are now randomized

* Added a note about random worker names in CHANGES.md

* Worker will now stop working when encountering an unhandled exception.

* Worker should reraise SystemExit on cold shutdowns

* Added anchor.js to docs

* Support for Sentry-SDK (#1045)

* Updated RQ to support sentry-sdk

* Document Sentry integration

* Install sentry-sdk before running tests

* Improved rq info CLI command to be more efficient when displaying lar… (#1046)

* Improved rq info CLI command to be more efficient when displaying large number of workers

* Fixed an rq info --by-queue bug

* Fixed worker.total_working_time bug (#1047)

* queue.enqueue() no longer accepts `timeout` argument (#1055)

* Clean worker registry (#1056)

* queue.enqueue() no longer accepts `timeout` argument

* Added clean_worker_registry()

* Show worker hostname and PID on cli (#1058)

* Show worker hostname and PID on cli

* Improve test coverage

* Remove Redis version check when SSL is used

* Bump version to 1.0

* Removed pytest_cache/README.md

* Changed worker logging to use exc_info=True

* Removed unused queue.dequeue()

* Fixed typo in CHANGES.md

* setup_loghandlers() should always call logger.setLevel() if specified

This includes:

- a partial refactor of the CLI to organize the shared options
- extends the tests in areas where passing custom backend classes makes sense
- allow setting the core CLI options as env vars
- minor cosmetic changes here and there

syntax: assertEquals -> assertEqual, assertNotEquals -> assertNotEqual
usage: status of worker and job now will use get/set method instead of property method