Here are new features:
1. Merge, delete & copy multiple books at one time
2. Add your own font
3. Trash function to restore deleted elements
4. Tap navigation bar's title to edit book name, group name, chapter name or page name
5. Look up dictionary
6. Copy pages from other fixed layout books
7. Search pages & glossary for fixed layout books
8. Word count for each chapter or page
9. Copy elements from other book to current book
10. Add image from Dropbox & Google Drive directly for cover, background, question, song & audio recording
11. Show thumbnails when selecting files from Dropbox & Google Drive
12. The term "Section" is changed to "Group" to avoid confusion
13. Fix bug for paragraph element editor
