image: key based on object hashcode

Key images based on the full object hashcode, alongside the UID.

Hopefully this reduces the likelihood of images getting stuck further.

CHANGELOG.md

@@ -14,6 +14,7 @@ be parsed as images
 - Fixed issue where short names starting with an article would not be correctly sorted (ex. "the 1")
 - Fixed incorrect item arrangement on landscape
 - Fixed disappearing dividers in search view
+- Reduced likelihood that images (eg. album covers) would not update when the music library changed
 
 #### Dev/Meta
 - Switched to androidx media3 (New Home of ExoPlayer) for backing player components

app/src/main/java/org/oxycblt/auxio/image/extractor/Components.kt

@@ -36,12 +36,11 @@ import org.oxycblt.auxio.list.Sort
 import org.oxycblt.auxio.music.*
 
 class SongKeyer @Inject constructor() : Keyer<Song> {
-    override fun key(data: Song, options: Options) =
-        "${data.album.uid}${data.album.songs.hashCode()}"
+    override fun key(data: Song, options: Options) = "${data.album.uid}${data.album.hashCode()}"
 }
 
 class ParentKeyer @Inject constructor() : Keyer<MusicParent> {
-    override fun key(data: MusicParent, options: Options) = "${data.uid}${data.songs.hashCode()}"
+    override fun key(data: MusicParent, options: Options) = "${data.uid}${data.hashCode()}"
 }
 
 /**