Fixed
- Cancellation of running jobs relied on a channel that was only being received when in the job fetch routine, meaning that jobs which were cancelled would not be cancelled until the next scheduled fetch. This was fixed by also receiving from the job cancellation channel when in the main producer loop, even if no fetches are happening. PR #678.
- Job insert middleware were not being utilized for periodic jobs. This insertion path has been refactored to rely on the unified insertion path from the client. Fixes #675. PR #679.