There's one major feature in this release, the ability to render tweets.
A tweet is a headline whose type is tweet. They can appear in any kind of page, of any type.
This is the Fargo side of the connection with Happy Friends.
There is a blog post on the Happy Friends site that explains the hookup from that side.
Get the outline from Happy Friends.
Choose Open by URL in the File menu. Enter the outline from step 1.
That gets you an outline with tweets in Fargo.
Copy and paste those into your outlines in Fargo, and render as normal.
The tweets should show up in your pages as they do in mine.
For a more detailed narrative, with an example, see this post on yesterday's Scripting News.