Org mode 9.0 released
Reading through the list of changes, I am very happy that I moved away from org mode.- New syntax for export blocks- org-file-apps no longer accepts S-expressions as commands- Preparation and completion functions in publishing projects change signature- Old Babel header properties are no longer supportedSo in other words, for the classes I teach every two years, I can forget about being able to open up my previous files and have them just work. This was a constant battle and is pretty much unique to org mode.