Call-time pass-by-reference has been removed
Default argument values
Formatting
Positional parameters
Ignore tags
Close the MySQL connection properly
Unused
symptoms
proctitles
1-based page numbers, for humans
fail_scan doesn't need to fail
404 makes more sense and fails just the same
typo
Mark failures as completed before raising
queue_task implementation

PHP implementation of Celery task queuing (using Redis, since the dependencies
are simpler than RabbitMQ).
Use requests in place of httplib2
Cleanup
Swap poller for Celery
Doc updates
Remove vestiges of MySQL message queue