Version 0.4.0-1

• Note: Jellyfin 1.7.0 or later is now required for use with Sailfin.
• AARCH64 support
• Added a simple music player, that is able to play simple playlists. Nothing fancy
  yet, things like shuffle and dynamically adding items are not supported yet.
• If possible, media is streamed as-is. In previous versions, media was always being
  transcoded, putting extra strain on the server. Due limitations of QtMultiMedia, any
  video with more than 1 audio tracks is currently still being transcode.
• Settings have been added to customize streaming behaviour. Transcoding can be disabled
  and the maximum bitrate can be chosen by the user.
• Some, but far from all pages, have been optimised for landscape mode.
• Images now show a blurry version of themselves (based on blurhash) before they are
  fully loaded.
• MPRIS support has been added, allowing the playback to be controlled from the lockscreen
  and in SailfishOS 4.2, also via headset buttons.
• A start has been made to allow for Sailfin to be remotely controlled by other Jellyfin clients.
  As for now, only basic playback controls such as play/pause/next/previous are implemented.
• The C++-side has been thoroughly rewritten! Most application logic has been moved
  from QML to C++, parts of the code are generated based on OpenAPI descriptions. This
  should make future additions, such as better caching and offline synchronization,
  easier to implement. This is also why this update took so long, I feel like I've learned
  (read: been frustrated) about a lot of the quirks of C++ and Qt :). This probably has taken most
  of the development time, so I expect now this is done that future updates won't take yet another year.