Workflow for publishers vs publications - subscribers vs subscription - controllers

[skilesare]

We currently do not have a register_publisher/registers_subscriber method? Do we assume that they are using register_publication? What if they don't have all of the configs? Is that ok as long as they are on the approved publisher/subscriber list?

I've added controllers as a concept to publications due to the fact that a service may register the publication for its publishers and want to control the namespace.

Current implementation:

• By default the first publication declarer will be the controller.
• Add Config for headers? icrc72:publication:controllers

[skilesare]

Controllers should be defined, but should be optional in the standard. Some implementations will not want to use namespace controllers.

[skilesare]

icrc72:subscription:controllers <-registration (Note: add to draft)
icrc72:subscription:controllers:add <-Updates
icrc72:subscription:controllers:remobe <-