
Almost all of the places that will need a ChangeNotes (when we start reading from that class) should already have a ChangeControl, so this is a convenient way to ship it around. To deal with the migration, do not eagerly load ChangeNotes from the constructor. We could lazily load on e.g. getApprovals(), but that would require catching OrmException in more places. Change-Id: I545b555e8369f7f0f775b5188079ea3e93ed9cef