 Version 6.13.9

* made Spinner in Queues view update accordingly
* if playing from the virtual queue in FeedEpisodes, the next episode comes from the filtered list
* when playing another media, post playback is performed on the current media so as to set the right state
* fixed timeSpent not being correctly recorded
* further enhanced efficiency of statistics calculations
	* in Statistics, feeds with no media started or downloaded are not shown
* furthered Statistics view into Compose
* added online homepage item in Settings->About to open the Github page
