Mark channel up to last message as read when switching channels
Mark channel up to last message as read when switching channels

peppy/osu,peppy/osu-new,ppy/osu,NeoAdonis/osu,2yangk23/osu,UselessToucan/osu,smoogipoo/osu,2yangk23/osu,peppy/osu,ppy/osu,EVAST9919/osu,UselessToucan/osu,EVAST9919/osu,NeoAdonis/osu,smoogipoo/osu,NeoAdonis/osu,smoogipooo/osu,smoogipoo/osu,UselessToucan/osu,peppy/osu,johnneijzen/osu,ppy/osu,johnneijzen/osu