Add "types" to activities to categorize them

[mmacfadden]

Versions

• Convergence Version: 1.0.0-rc.8

Description We will add types to activities so that activities can be categorized. The type will just be a simple user defined string. This will make is such that activity id's only have to be unique within their type. This will set the stage for controlling who can create activities by type and other type specific configurations.

Breaking Change

This is a breaking change to the Client API. Specially the join method now two multiple parameters. For example:

domain.activities()
  .join("my-type", "my-id")
  .then(activity => console.log("Activity Joined", activity.type(), activity.id()));