Fix busted unit test, remove wrong todo
Truncate notes, removing ongrid part, when switching between primary and alt grid
Fix up AddNote, add AddHiddenNote
Fix drawing problem
Fix bug where notes had the wrong height because they defaulted to a bad tip edge
Remove notes when clearing the scrollback buffer. Handle partially truncated due to scrollback notes. Increment scrollback overflow correctly.
Add containsObject:, don't assert if you try to remove an object from a tree it's not in
Add delegacy to PTYNoteView. Add a kill button to PTYNoteView. Fix its drag regions