A few weeks ago I made an important pull request to complete, fix and update the XEP-0317: Hats.

This PR included the following changes:

Specify a urn:xmpp:hats:commands:dcreate command to add a hat to the available list
Specify a urn:xmpp:hats:commands:ddestroy command to destroy a hat from the list
Clarify how the service should broadcast the hat changes when it is edited, assigned, removed or destroyed
Specify a way for an entity to get the complete list of hats using a hash in disco#info
Add a hue optional parameter allowing entities to assign a color to the hat that can be displayed properly in any conditions on the client (as explained in XEP-0392: Consistent Color Generation)
Standardize all the form fields using XEP-0068
Fix some typos

I tried to reach the authors without success so I'm trying again using the mailing list.

I'd really like to move it forward then we can start implementing them in our clients and servers.

Regards,

edhelas