ProseReader for Android v0.9.7

- 40% faster ebook loading
- wider font-size selection
- fixed a 'recent documents' issue on Android 12
- fixed a hyperlink parsing issue
- improved chapter detection
- improved pagination (end of page guillemet, etc.)
- several UI improvements
- 3rd party code update: html-to-markdown v2.2.0 (for correctness)
- 3rd party code added: com.lazygeniouz:dfc:1.0.8 (performance)

Latest changes: https://timur.mobi/prose/doc/latest

