Also, fix the unique-id based accessors (the four byte code for id was
wrong in the sdef)
Add valueIn<Key>WithUniqueID accessors
Add a few protocols and protocol implementations for the AppDelegate
and MainWindowControllor so as to expose needed functionality for
scriptability
Also, added support for accessing feeds directly from the top level
container, essentially skipping account as a hierarchy level.
With this change, a script like
tell app “Evergreen”
title of every article of feed "Six Colors" where read is true
end tell
produces the expected result.
