- Implement `presence` access model for PEP nodes.
- Add PEP auto-subscription (`+notify` handling)
- New `get_pep_last_items` storage method to retrieve in a single query items to send to
auto-subscribers.
- Online resource tracking.
This completes the PEP support.
rel 476
Add methods to handles the relationships which were already present in storage.
This plugins add methods to handle validation and rules from the specs.
`get_pubsub_node_children` helper method has been added to storage.