 Version 6.6.6:

* fixed difference between the count of episodes and the actual number of episodes (seen when the number is small) in History, AllEpisodes, and OnlineFeed views
* fixed an error (introduced in 6.6.3) in setting feed preferences when subscribing one
* upon start, if no previously played media, the player is set invisible
* fixed an issue of fully played episode not correctly recorded as such when Podcini is in the background
* volume adaptation numbers were changed from 0.2, 0.5, 1, 1.5, 2, 2.5 to 0.2, 0.5, 1, 2, 4, 7 (the max boost being 6dB)
* Kotlin upped to 2.0.20
* Realm upped to 2.3.0
