Merge branch 'master' of gitlab.futo.org:videostreaming/grayjay

...ain/java/com/futo/platformplayer/Extensions_Formatting.kt

app/src/main/java/com/futo/platformplayer/UIDialogs.kt

...n/java/com/futo/platformplayer/activities/MainActivity.kt

...formplayer/api/media/models/channels/SerializedChannel.kt

...main/java/com/futo/platformplayer/dialogs/ImportDialog.kt

.../main/java/com/futo/platformplayer/models/HistoryVideo.kt

...c/main/java/com/futo/platformplayer/models/ImportCache.kt

...c/main/java/com/futo/platformplayer/states/StateBackup.kt

.../main/java/com/futo/platformplayer/states/StateHistory.kt

...ain/java/com/futo/platformplayer/states/StatePlaylists.kt

...java/com/futo/platformplayer/states/StateSubscriptions.kt

...in/java/com/futo/platformplayer/stores/v2/ManagedStore.kt

...ava/com/futo/platformplayer/stores/v2/ReconstructStore.kt

app/src/stable/assets/sources/youtube

app/src/unstable/assets/sources/youtube