TODO
    General:
        ✓ Internationalization
        ✓ Application icon
        ✓ .desktop file        
    Options:
        ✓ Automatic library management
            ✓ Recursive file addition
            ✓ Auto deletion
        ✓ Remember files
        ✓ Check files (hashes) upon restart
        ✓ Draw shadows
        ✓ Perform culling
    Library:
        ✓ sqlite3 for cover images cache
        ✓ sqlite3 for storing metadata
        ✓ Drop down for SortBy
        ✓ Image delegates
        ✓ Image reflow
        ✓ Search bar in toolbar
        ✓ Shift focus to the tab that has the book open
        ✓ Tie file deletion and tab closing to model updates
        ✓ Create separate thread for parser - Show progress in main window
        ✓ Memory management
        ✓ Mass tagging
        ✓ Add capability to sort by new
        ✓ Table view
        ✓ Context menu: Cache, Read, Edit database, delete, Mark read/unread
        ✓ Information dialog widget
        ✓ Allow editing of database data through the UI + for Bookmarks
        ✓ Include (action) icons with the applications
        ✓ Drag and drop support for the library
        Set focus to newly added file
    Reading:
        ✓ Drop down for TOC
        ✓ Override the keypress event of the textedit
        ✓ Use format* icons for toolbar buttons
        ✓ Implement book view settings with a(nother) toolbar
        ✓ Substitute textedit for another widget
        ✓ Theming
        ✓ Keep fontsize and margins consistent - Let page increase in length
        ✓ Fullscreening
        ✓ Remember open tabs
        ✓ Selectable background color for QGraphicsView
        ✓ View modes for QGraphicsView
        ✓ View and hide toolbar actions in a list
        ✓ Line spacing
        ✓ Record progress
        ✓ Text alignment
        ✓ Background color
        ✓ Bookmarks
            ✓ Creation
            ✓ Navigation
            ✓ Editing: Name
            ✓ Deletion
        ✓ Cache next and previous images
        ✓ Set context menu for definitions and the like
        ✓ Paragraph indentation
        ✓ Comic view keyboard shortcuts
        ✓ Comic view context menu
        ✓ Make the bookmark dock float over the reading area
        ✓ Spacebar should not cut off lines at the top
        ✓ Track open bookmark windows so they can be closed quickly at exit
        Annotations
            ✓ Text
                Annotation preview in listView
            Image
        Adjust key navigation according to viewport dimensions
        Search document using QTextCursor
    Filetypes:
        ✓ pdf support
            Parse TOC
        ✓ epub support
            ✓ Homegrown solution please
        ✓ cbz, cbr support
            ✓ Keep font settings enabled but only for background color
        ✓ mobi, azw support
            Limit the extra files produced by KindleUnpack
                Have them save to memory
    Other:
        ✓ Define every widget in code
    Bugs:
        Deselecting all directories in the settings dialog also filters out manually added books
        Clean up 'switch' page layout
        Colors aren't loaded properly for annotation previews

    Secondary:
        Graphical themes
        Change focus rectangle dimensions
        Tab reordering
        Universal Ctrl + Tab
        Allow tabs to detach and form their own windows
        Goodreads API: Ratings, Read, Recommendations
        Get ISBN using python-isbnlib
        Pagination
        Use embedded fonts + CSS
        Scrolling: Smooth / By Line
        Shift to logging instead of print statements
        txt, doc, chm, djvu, fb2 support
        Include icons for filetype emblems
        Comic view modes
            Continuous paging
            Double pages
        Ignore a / the / numbers for sorting purposes
        ? Add only one file type if multiple are present
        ? Create emblem per filetype
        In application notifications