New features:
1. Transcribe audio file or audio recording into text (support different languages)
2. Specify language preference for transcription (Speech Recognition)
3. Suggest image's caption and alternative text using Image Labeling with AI
4. Audio Settings: image is allowed for button view (button is placed in the middle of image)
5. Use markdown for footnote's content
6. Export to EPUB or preview book directly in book list (swipe right or long press)
7. Search and import GIF from Tenor
8. Support GIF better
9. New color picker for iOS 14
10. New photo picker for iOS 14
11. Drag book item to open new window for iPad
12. Bug fix