1.5.3 - Buf fixes and improvements 1.4 - Improved touch handling - Performance optimization - Bug fixes 1.3 - Added ability to zoom in and zoom out 1.2.1 - Bug fixes 1.2 - Localized for the following languages: 1. English 2. Chinese 3. German 4. French 5. Italian 6. Japanese 7. Korean 8. Portuguese 9. Spanish 10. Russian 1.1 - scaling bug fixed - improved interface