Improve TODO.md & add section about Qt future

TODO.md

@@ -1,7 +1,10 @@
+# TODO
+
 - invite keybind & context menu
 - better cancel for all boxes
 
-- Media
+## Media
+
 - Handle set avatar upload errors
 - Support encrypted m.file
 - Confirmation box after picking file to upload
@@ -21,7 +24,8 @@
 - EventFile & Downloading (right click on media > save as...)
 - Prevent using upload keybinds in rooms with no perms
 
-- Refactoring
+## Refactoring
+
 - Use a singleton for utils.js
 - Use HBox for Profile
   - Get rid of all `currentSpacing` stuff
@@ -31,7 +35,8 @@
 
 - Room Sidepane save/load size & keybinds
 
-- Fixes
+## Bug fixes
+
 - Pausing uploads doesn't work well with matrix.org
 - Quickly posting with another account leads to sync stop
 - CPU usage
@@ -55,7 +60,8 @@
 - Terrible performance using `QT_QPA_PLATFORM=wayland-egl`, must use `xcb`
 - Quote links color in room subtitles (e.g. "> http://foo.orgA)" )
 
-- UI
+## Interface
+
 - Scrollable popup
 - HDrawer snapping
 - Make theme error/etc text colors more like name colors
@@ -124,19 +130,8 @@
 
 - Custom file picker for Linux (...)
 
-- Major features
+## Backend
-  - E2E
-    - Device verification
-    - Edit/delete own devices
-    - Request room keys from own other devices
-    - Auto-trust accounts within the same client
-    - Provide help when undecryptable messages occur, including:
-      - Trigger `nio.AsyncClient.request_room_key`
-      - Option to export-logout-login-import to fix one-time key problems
-  - Read receipts
-  - Status message and presence
 
-- Client improvements
 - Refetch profile after manual profile change, don't wait for a room event
 
 - Prevent starting multiple client instances, causes problems with E2E DB
@@ -158,26 +153,82 @@
 - Animate RoomEventDelegate DayBreak apparition
 - Live-reloading accounts.json
 
-- nio
+- E2E
+  - Device verification
+  - Edit/delete own devices
+  - Request room keys from own other devices
+  - Auto-trust accounts within the same client
+  - Provide help when undecryptable messages occur, including:
+    - Trigger `nio.AsyncClient.request_room_key`
+    - Option to export-logout-login-import to fix one-time key problems
+- Read receipts
+- Status message and presence
+
+## Nio contributions
+
 - Dedicated error for invalid password on key import
 - Running blocking DB function calls in executor
 - `AsyncClient.share_group_session`: send device batches concurrently
 
 - RoomMessageMedia and RoomAvatarEvent info attributes
 - `m.room.aliases` events
-  - MatrixRoom invited members list
-    - Verify room has correct name when creating direct chat and peer hasn't
-      accepted the invite yet
 - Left room events after client reboot
 - `org.matrix.room.preview_urls` events
 - Support "Empty room (was ...)" after peer left
 - Previewing room without joining
 
 - Get content repo config API
-  - Add the `resume()` method
+- Add the `resume()` account "login" method
 
 - See if we can turn all the Error classes into actual exceptions
 
-- Distribution
+## Distribution
+
 - Include python dependencies in binary with rcc?
-  - README.md
+- Improve the README.md
+
+## Notable changes for future Qt version upgrade
+
+### [Qt 5.13](https://wiki.qt.io/New_Features_in_Qt_5.13)
+
+- Added `SplitView`
+- Added `cache` property to icon
+
+### [Qt 5.14](https://wiki.qt.io/New_Features_in_Qt_5.14)
+
+- Applications can now opt-in to use non-integer scale factors.
+  Use `QGuiApplication::highDpiScaleFactorRoundingPolicy`.
+
+- Added `qmlRegisterSingletonInstance` function.
+  This allows to expose a QObject as a singleton to QML, without having to
+  create a factory function as required by `qmlRegisterSingletonType`.
+  It is meant as a type safe replacement of `setContextProperty`.
+
+- Added `qmlRegisterAnonymousType` as a replacement for `qmlRegisterType`.
+  It allows to specify the URI and major version for better tooling support.
+
+- qmllint gained an experimental -U option. If run with it, it warns about 
+  about accesses to unqualified identifiers
+
+- `Text` and `TextEdit` now support Markdown format
+  (CommonMark and GitHub dialects) as an alternative to HTML.
+  Includes the GitHub checklist extension, such that you can click to toggle
+  checkboxes in a `TextEdit`.
+
+- `TextEdit` uses an I-beam cursor by default, and a pointing-hand cursor when
+  hovering a checkbox or a link
+
+- Added `WheelHandler`, an Event Handler for the mouse wheel, and optionally
+  for emulated mouse wheel events coming from a trackpad.
+
+- Added `BoundaryRule` in Qt.labs.animation: a `PropertyValueInterceptor` that
+  restricts the range of values a numeric property can have, applies
+  "resistance" when the value is overshooting, and provides the ability to
+  animate it back within range. It's particularly useful in combination with
+  `WheelHandler`, to provide similar physics as Flickable has.
+
+- `Image` and `BorderImage` now have the same `currentFrame` and `frameCount`
+  properties that `AnimatedImage` has; this allows choosing an individual icon
+  from an .ICO file that contains multiple icons, for example.
+  In the future it's intended to support other multi-page formats such as
+  PDF, TIFF and WEBP.