* Added external storage (SD) support for all APIs
* Removed directory structure in Browse due to problems with Internal+External
* Optimized loading time
Resolves: #78
Pros:
* Removed text update (now it is always updated and parsed from the file each time)
* Removed text storage (smaller app size)
* Dramatically sped up loading in Browse (10 books in ~1s)
Cons:
* Longer Reader loading time (~3x, partly fixable)
* More dependency on the file (fixable)
Resolves: #134
* Added chapters in Reader
* ModalDrawer to fast navigate or track current chapter
* Current chapter progress in top bar
* Optimized Reader scroll performance
* Improved EPUB parser
* Fixed incorrect order for chapters(due to no sorting before)
* Remove ZIP parser (replaced with EPUB)
Resolves: #66, #17