-Rebuilt playlist logic. It is now a Queue type rather than a list.
-Added back transition when exiting EpisodeFragment.
-Added ReverseInterpolator class that inverts all values in an Animation, with a curve similar to that of an AccelerateDecelerateInterpolator.
-Made statusbar translucent & appbar transparent to put more emphasis on the content. Navigation bar no longer changes colors.
-Removed some useless class files.
-Started a redesign of the PlayerFragment (again).