Option to update expired memberships as part of the job.process_membership

It looks like expired memberships are excluded from job.process_membership for performance reasons.

There are (edge) cases where this is problematic. For example, lets say that I increased the grace membership period from 3 to 6 months. People whose membership ended 4 months ago will not have their membership status updated from expired to grace.

The other three membership statuses that are excluded from membership updates are 'Deceased', 'Pending' and 'Cancelled'.

Not sure if there is a use case for also re-calculating these but interested in people's thoughts.

Proposed solution: add an option to process normally excluded membership statuses (maybe just expired) from job.process_membership.