New features:
1. Revamp Quiz & Question Editor
2. Quick Add Questions
3. Import Questions from CSV file
4. Question supports rich text
5. Quiz supports page break between questions and hides title
6. Revamp Slideshow Editor
7. Keyboard Shortcuts for Rich Text Editor, Markdown Editor, and HTML Editor Interface
8. Context Menu for Book List, Page List, and Element List
9. New duplicate function for elements
10. UI enhancement
11. Fix dark mode issues
12. Bug fix
