* Add three state (include/exclude/ignore) search filters (works for now only on MangaFox and MangaHere)
* checkbox icons in xml format
* fix checkbox icons referencing
* fix three states filters in remaining catalogs
* use Spinner for filter with more than three states (Mangasee)
* use EditText for freetext filters (Mangasee)
* remove pngs
* Filter class/subclass
* add Filter.Header
* English catalogs
* Implement language switching using BaseActivity
* Add requested changes
* Cleanup App.kt Imports and add pref_language_key
* Acutally use @string for key
* Use string resource for language preference title
* Implemented genre filter for Mangachan
* Fixed search for Mangachan
* Changed url with latest updates for Mangachan
* Updated genres for Readmanga
* Removed duplicate code for Readmanga
* 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
