- Investigate?
  - `QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling)`

- Refactoring
  - Use [Animators](https://doc.qt.io/qt-5/qml-qtquick-animator.html)
  - Sendbox
  - Use .mjs modules
  - SignIn/RememberAccount screens
    - SignIn must be in a flickable
  - Don't bake in size properties for components
  - Unfinished work in button-refactor branch
    - Button can get "hoverEnabled: false" to let HoverHandlers work
  - Room Sidepane
    - Hide when window too small
    - Also save/load its size
  - When qml syntax highlighting supports string interpolation, use them

- Fixes
  - Message position after daybreak delegate
  - Keyboard flicking against top/bottom edge
  - Don't strip user spacing in html
  - Past events loading (limit 100) freezes the GUI - need to move upsert func
    to a WorkerScript
  - `MessageDelegate.qml:63: TypeError: 'reloadPreviousItem' not a function`
  - Horrible performance for big rooms
  - [hr not working](https://bugreports.qt.io/browse/QTBUG-74342)

- UI
  - Make invite/left banners look better in column mode
  - Messages editing
  - Code highlighting
  - Support GIF avatars
  - When reduced, show the full-window sidepane instead of Default page
  - Adapt shortcuts flicking speed to font size and DPI
  - Show error box if uploading avatar fails
  - EditAccount page:
    - Device settings
    - Multiaccount aliases:
      - Warn when conflict with another alias
      - Forbid spaces?
      - Add an explanation tooltip
      - Prevent sending messages with an user not in room
      - Support \ escaping
  - Improve avatar tooltips position, add stuff to room tooltips (last msg?)
  - Accept drag and dropping a picture in account settings to set avatar
  - When all the events loaded on beginning in a room are name/avatar changes,
    no last event room text is displayed (use sync filter?)

  - Show something when connection is lost or 429s happen
  - "Rejoin" LeftBanner button if room is public
  - Daybreak color
  - Replies
  - `pyotherside.atexit()`
  - Sidepane
    - Header back button when reduced
    - Better look for arrows and option button when collapsed
    - Way to put it back to auto-sizing (snap)
    - Show it when hovering on the left when collapsed/reduced
    - Ability to drag on any place of the pane to resize
  - Reducable room sidepane, swipe to show full-window

  - Invite to room
  - Server selection
  - Register/Forgot? for SignIn dialog
  - Add room
  - Leave room
  - Forget room warning popup
  - Prevent using the SendBox if no permission (power levels)
  - Spinner when loading past room events, images or clicking buttons
  - Theming
    - Don't use user theme in debug mode
    - Don't create additional lines in theme conversion (braces)
    - Recursively merge default and user theme
    - Distribute fonts
    - preferredIconPack: accept multiple values
    - Find icon packs in user data dir
    - Correctly implement uiScale/fontScale + ctrl+-= keys
      - See [Text.fontSizeMode](https://doc.qt.io/qt-5/qml-qtquick-text.html#fontSizeMode-prop)
    - Way to round avatar corners to allow box radius
    - If avatar is set, name color from average color?
    - Accent color from background
  - Settings page
  - Message/text selection

  - Custom file picker for Linux...

- Major features
  - E2E
    - Device verification
    - Edit/delete own devices
    - Request room keys from own other devices
    - Auto-trust accounts within the same client
    - Import/export keys
  - Uploads & proper http thumbnails
    - Reduce messages ListView cacheBuffer height once http thumbnails
      downloading is implemented 
  - Read receipts
  - Status message and presence
  - Links preview

- Client improvements
  - Config file format
  - Set Qt.application.* stuff from C++
  - [debug mode](https://docs.python.org/3/library/asyncio-dev.html)
  - Initial sync filter and lazy load, see weechat-matrix `_handle_login()`
    - See also `handle_response()`'s `keys_query` request
  - Direct chats category
  - On sync, check messages API, if a limited sync timeline was received
  - Markdown: don't turn #things (no space) and `thing\n---` into title,
    disable `__` syntax for bold/italic
  - Push instead of replacing in stack view (remove getMemberFilter when done)
  - `<pre>` scrollbar on overflow
  - When inviting someone to direct chat, room is "Empty room" until accepted,
    it should be the peer's display name instead.
  - See `Qt.callLater()` potential usages
  - Animate RoomEventDelegate DayBreak apparition
  - Room subtitle: show things like "*Image*" instead of blank, etc

- nio
  - downloads API
  - MatrixRoom invited members list
  - Invite events are missing their timestamps (needed for sorting)
  - Left room events after client reboot
  - `org.matrix.room.preview_urls` event
  - `m.room.aliases` event
  - Support "Empty room (was ...)" after peer left
  - Previewing room without joining

- Distribution
  - Include python dependencies in binary with rcc?
  - README.md