• Fix for Difficulty bar not work with PostgreSQL Database. Thanks @HuongNV13
• Improving help text. Thanks @lucaboesch
• Improving various strings. Thanks @lucaboesch
• Fixing problem that state cannot be changed on Moodle versions prior to 3.7. Thanks @HuongNV13
• Automatically create Question to Studentquiz_questions table when import question from MoodleXML file do not work. Thanks @HuongNV13
• Setting state of imported questions to 'new' on Moodle versions prior to 3.7. Thanks @HuongNV13
• Improving Change State when answering/previewing question. Thanks @HuongNV13