done:
    + brand badge icon as file drag'n'drop
        + button
    + upgrade icon d'n'd
        + button
    + custom content removing (context menu)
    + folder watcher
    + save
    + remember selected skins
    + allow to make year empty
    + change year with arrows
    + change year in name
    + detect year in name
    + missing properties
    + url highlight
    + author/version editor
        + author list
    + specs loading
    + detect country
    + tags fixing and sorting (context menu?)
    + missing root directory handling
    + only unique tags
    + sorting after reloading
    + fix damaged json
    + fix filters
    + change parent
        + create missing icon
        + handling of change parent of parent

fixme:

potential errors:
    - first "Application.Current.Dispatcher.Invoke(() => {", then "Changed = false", or is it?
    - check how change parent car works (what is selected by default?)

architectural problems:
    - complete list reload
    - view skins errors as car errors
    - change AC root directory without reloading
    - clear errors on reloading
    + changed car icon

todo:
    + improve filters
        + negative
        + nor
        + math filtering
        + tags
        + specs
        - save filters
        - auto-update filtered lists on properties changing?
            - or, maybe, update button?
    + error fixer
        + renamed file founder
        + damaged json reader
            - arrays
            - curves
            - missing schemes
        - missing properties fixer
            - missing name error
            - missing brand error
        - showroom missing kn5 error detection
        - track missing kn5 error detection
    + tracks
        + tags
        + information
        - specs editor
    + track layouts support
        - layout renaming
        - whole set renaming
        - edited raising
        - errors raising
    + showrooms
        - figure out what to show
        - previews?
    - remove double spaces, trim strings
    - rewrite reloading the other way?
    - car skins errors raising

    + specs editor
        + specs clearer?
        + graphs editor
        - graphs analyzer
        - optional forced spaces
        - optional format?
    - cut/copy/paste tag
    - edit tag
    - drag'n'drop tags?
    - regenerate tags automatically
    - detect missing parent
    - find renamed files/folders
    - year database
    - optional auto-change brand badge
    - optional brand-in-name (and optional brand-out-name)
    - auto-update skins previews
    - auto-update skins colors
    - skins removing
    - drive feature
        - quick drive
            + switch skins
            - select car by brands
                - remember position
                - optional list mode
                - adjustments
                - switch between parent+childs
                - back button
            - condition fields
            - realism
            - conditions to race.ini values
            - autoupdate conditions
    - auto-update body shadows
    - hotkeys
    - checkboxes
        - custom lists?
    - logo.png?
    - optional bind classes list to race, street, drift?
    - replays

    - remember filters
    - remember current section
    - fix filter section highlight
    - warn about stuff like "Mercedes"
    - number plate generator

    - car mod installation
        - from archive
        - from folder
        - check for changes?
        - selectable update

    - track mod installation
    - showroom mod installation

    + built-in browser
        - find description

    - favorites
    - proper description reading/changing

    - data analyzer
        - wrong weight
        - wrong power
        - rwd/fwd/awd
        - unoriginal physic detection
        - http://planetcalc.ru/1908/
    - kn5 analyzer
        - missing susp
        - wrong blurred rims
        - cockpit_lr, steer_lr
        - quality analyzer:
            - tris count
            - wrong textures format
    - unoriginal sound detection
        - broken sound detection?

later:
    - map generator
    - regenerate outline.png from map.png?

    - font generator
    - improve image cropper
    - url/stuff bb protection
    - placeholders
    - check new version on RD
    - skins editor
        - live skins viewer
        - psd support
    - apps
    - race
    - career
    - 3d-viewer in-app
    - about