v2.5.0

Review the Changelog for more details.

Implemented enhancements:

• Add Reschedule, Discard, Retry Job buttons to Dashboard #425 (bensheldon)
• Use unique index on [cron_key, cron_at] columns to prevent duplicate cron jobs from being enqueued #423 (bensheldon)

Fixed bugs:

• Dashboard fix preservation of limit and queue_name filter params; add pager to jobs #434 (bensheldon)