v0.97.2-beta: Theme selector, more queue perf improvements & bugfixes

[htkhiem]

New

• In-app theme selector following other GNOME apps' style.
  

Refactors

• Queuing is now done in the background to avoid blocking UI on large queuing operations & slow servers.
• Queue updates are now also asynchronous and windowed.

Bugfixes

• Folder view state bugs, esp. after resurfacing from background mode.
• Crashing when attempting to refresh connection in some cases.
• Albums of the same name getting merged together.
• Wiki & bio text not clearing upon switching to another album/artist.

Pull Requests

• Disambiguate albums by albumartist tag by @htkhiem in Disambiguate albums by albumartist tag #174
• v0.97.2: Theme selection & paged incremental queue updating by @htkhiem in v0.97.2: Theme selection & paged incremental queue updating #176

Full Changelog: v0.97.1-beta...v0.97.2-beta

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This discussion was created from the release v0.97.2-beta: Theme selector, more queue perf improvements & bugfixes.

[htkhiem]

Flathub release is being held for review due to me removing the "an" article from the description, so the delay will be longer this time :(.