* Saving to SD working
* Rename imagePath to uri
* Handle android < 21
* Minor changes
* Separate downloader from the manager. Optimize folder lookups
* Persist downloads across restarts
* Fix for #511
* Updated ReactiveNetwork. Add some documentation
* More documentation and minor fixes
* Handle persistent notifications. Other minor changes
* Improve downloader and add documentation
* Rename pageNumber to index in Page class
* Remove unused methods
* Use chop method
* Make sure dest dir is created
* Reset downloads dir preference
* Use invalidate options menu in download fragment and fix wrong condition
* Fix empty download queue after application restart
* Use addAll method in download queue to avoid too many notifications
* Inform download manager changes
* Added option to download page or set page as cover
* Removed network call now copies from page image
* Format fix + notification feedback
* Added code to prevent OutOfMemory error. Made notification optional. Can now save image on long press. Bug fixes
* Now uses glide for notification
* Fixed webtoon page
* Fixes + API 16 support
* fixes
* Fixed API 24 FileProvider error
* Added page.ready check
* Indention
* Add very basic "Add to homescreen" action in manga info fragment.
* Fix open from homescreen opening current manga (if a manga is open).
Code cleanup.
* Improve fix for "Opening from homescreen opens currently open manga if a manga is currently open" and fix "Going back to the main app via a Manga opened through a shortcut repeats the launcher open animation".
* Implement custom icons, add star icon and optimize some things.
* Remove Tachiyomi and custom image icon types.
* Move icon creation task into an observable.
Added some extra error handling.
