At the moment, if we want to iterate over the slides contained in a SlideSet we need to:

slideset = SlideSet(...)
for slide in slideset.slides:
    # do smth

To me, iterating directly over a SlideSet could be more intuitive:

slideset = SlideSet(...)
for slide in slideset:
    # do smth

My proposal is to make SlideSet an iterable class (while keeping the slides property)