allow registering for more granular events

[spali]

• register for peer update (already implemented)
• register for only a channel of a peer
• register for only a specific paramset of a peer and channe
  • also for specific paramsets in all channels
  • should also support using MASTER paramset
• specific value only
• some multiple specific values

maybe the description for registering can be something like a tree array/object which defines what should fire an event, doesn't have to be exact this format, but should support that kind of granularity:

/* get all updates on the specific value STATE of peer 1 channel 1 paramset VALUES */
{
  peerId: 1,
  event: onUpdate,
  channels: {
    1: {
      paramsets: { 
        VALUES: STATE
      }
    }
  },
},
/* get all changes on values of peer 2, channel 2, paramset MASTER */
{
  peerId: 2,
  event: onChange
  channels: {
    2: {
      paramsets: { 
        MASTER: {}
      }
    }
  },
},
/* get all changes on values of peer 3, channel 2 */
{
  peerId: 3,
  event: onChange
  channels: {
    2: {}
  },
},
/* get all changes of the value of the system variable */
{
  systemVariable: myVariable,
  event: onChange
},
/* get all changes of all system variables */
{
  systemVariable: {},
  event: onChange
},
/* get all changes of all system messages */
{
  systemMessage: {},
  event: onChange
},
/* get all timed events when triggered */
{ events: {},
  event: trigger
}

[spali]

Currently:
When I register for events of a specific device, I don't get events for changes I have done.
Also I receive events even the value didn't change.

Is this expected?

[spali]

Even worse... If I change a value (at least by any kind of rpc access) it doesn't fire an event for the change.
Is it possible, that only changes made by the physical device fires an event?