Purge expired pending orders.
Do not purge if order contains any on-hold inventory unit
Add “sylius:order:release” command to release on-hold inventory
Fix order release command.
Clean up
Dispatch “SyliusOrderEvents::POST_RELEASE” event after flush
Rename “releaseOrder” to “releaseOrderShipments”
Allow inventory holding durating to be set as command parameter.
Move the logic of Release command to a separate service.
Merge pull request #1217 from kayue/patch/purge-pending-orders

Command to purge expired pending orders.