- ✨ Add group_by functionality for rich output.  Multi-device outputs now have a nicer format with line between each device.
 - 🗃️ device listings filtered by any or all of dev_type, site, group now result in a cache update.
 - 🐛 fix issue in batch_delete_devices / used by `cencli delete device` and `cencli batch delete devices`.  Would fail to show confirmation, and fail to populate an API call if the device was Down.
 - 🐛 Fix bug in batch_add_sites
 - ✅ Update tests