v0.5.5

New: Files can now be attached inline to submission grades.
New: Students can now clearly see their color-coded grades for each assignment.
Update: The buttons for course management have been simplified.
Update: Toggle lecture live is now done via the student lecture view page.
Update: A message now shows for instructors on certain pages that makes it clearer where content should be edited.
Update: By default, all new courses have one default assignment type, “Assignment”.
Fixed: Issue where creating or deleting documents could cause 404 errors.
Fixed: Issue where documents would not show for assignment grades.