Added a registry.get_job_count().
Renamed StartedJobRegistry.get_job_count to StartedJobRegistry.count for consistency.
Added __len__ method to Queue.
Merge pull request #419 from selwin/registry-len

Added JobStartedRegistry.count
Fixed a bug where expired jobs aren't deleted from JobStartedRegistry.
Added FinishedJobRegistry to monitor finished jobs.
Merge pull request #421 from selwin/finished-registry

Added FinishedJobRegistry to monitor/view completed jobs
Merge branch 'master' of github.com:nvie/rq into cli-rq-worker
Use type instead of default to specify interval option type