List of additional features:
- Several updates to questionnaire exercises
- Checkbox questions may give some points (less than max) for partially correct answers.
- Checkbox questions may include neutral choices that are neither correct nor wrong.
- New random question type that randomly selects a subset of all defined checkbox choices.
- Random questionnaires using the pick_randomly option have been fixed (they used to be quite broken).
- Random questions may be frozen or they may change after each submission attempt.
- Questionnaire model answers may be hidden with new settings.
- Question hints may be targeted with regular expressions.
- New text question type that gives feedback on the difference between the answer and (multiple) model solutions.