Add and maintain object diagrams for each feed

[j-d-b]

Background

Prior to WZDx v4.0, the team maintained an object diagram (it is still in the repository) for the WZDxFeed. However, with the addition of two new feeds in WZDx v4.0, there were not enough team members with availability or knowledge of using the diagram software to create the object diagrams for the v4.0 feeds.

Proposal

Part of the issue was that the objects in the object diagram contained the full list of properties, so it was onerous to remove and add to them, especially if one was unfamiliar with the diagram software and text formatting.

I propose that we add and maintain object diagrams, but that the diagrams show just the objects and how they relate without showing the properties of each object. The user can get that information from the specification documentation. This would greatly decrease the amount of work to create the diagrams and there would be much less need for updates while still providing value.

[sergebeaudry]

Agreed. Was useful but I understand the pain and the information will be one click away with the proposal

[j-d-b]

In addition, the high-level description of each object could be added, instead of listing all the properties.

[j-d-b]

Implemented in #330.