- fix - responsive view - go to last page if no back cover - improvement - WebGL mode book thickness
- fix - go to last page when single page view and no back cover - fix - print pages - set images to be 100% width of the paper
- fix - js error on mobile - new - option Front Cover - disable to displaying only inner pages (1-2, 3-4, ...) - new - option PDF Text Layer - if text layer will be rendered, disable for faster page load, enable for text selection and text search
