* #35 Create `ElementNavigationController` subclass
* #35 Add encryption icons
* #35 Add avatar and encryption badge image to the room screen view model
* #35 Create `RoomHeaderView` class
* #35 Replace room title with a RoomHeaderView instance in the toolbar
* #35 Add changelog
* #35 Introduce `UITestScreenIdentifier` and refactor ui tests
* #35 Fix old tests
* #35 add some tests for room screen
* #35 Use svgs instead of pngs
* #35 Fix PR remarks
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