1.x-1.0.0

Initial Release

• Per content type revision limit — Adds a "Maximum previous revisions to keep" field
  to each content type's revision settings. Leave blank for unlimited, set to 0 for no
  previous revisions, or set to N to keep the N most recent old revisions.
• Automatic pruning on save — On every node save, old revisions beyond the limit for
  that content type are deleted immediately. No manual intervention required.
• Cron queue for bulk pruning — When a limit is set or tightened on a content type,
  all existing nodes of that type are queued automatically. The queue is processed in
  30-second chunks during each cron run, avoiding timeouts on large sites. A "Queue prune
  for all limited types now" button is also available on the admin overview page.
• Draft Workflow safe — Only revisions older than the current revision (vid < node.vid)
  are ever pruned. Forward draft revisions (vid > node.vid), as used by Draft Workflow and
  Revisioning, are never touched.
• Admin overview — Summary page at Admin → Configuration → Content → Node Revision Limit
  showing each content type, its configured limit, and total node count.
• No extra database tables — Settings stored within Backdrop's existing content type
  CMI config (node.type.{type}), the same pattern used by Draft Workflow.
• Backdrop Native: built for Backdrop CMS, not a port of a Drupal 7 module.