I've done some basic testing using existing quizzes trying as
much as I could think of, and it all worked well!
Well done, Henrik! Great job!
Still, this should be regarded as unstable at least until more
people have had a try. Please test this thing solidly on new
and old quizzes.
Each format is now in it's own subdirectory, which allows the
format to have as many files as it likes. The formats are now
detected automatically (no need to edit lib.php anymore) and
the parent class is now in mod/quiz/format.php
Lastly, I added Paul Shew's new GIFT format.
