-Added nonnull and final constraints to variables in MediaSourceManager.
-Added nonnull and final constraints on context related objects in BasePlayer.
-Fixed Hls livestreams crashing player when behind live window for too long.
-Fixed cache miss when InfoCache key mismatch between StreamInfo and StreamInfoItem.
-Fixed live media sources failing when using cached data source by introducing
cacheless data sources.
-Added custom track selector to circumvent ExoPlayer's language normalization NPE.
-Updated Extractor to correctly load live streams.
-Removed deprecated deferred media source and media source manager.
-Removed Livestream exceptions.
-[#919] Fixed custom notification does not trigger unlocking on lockscreen.
-[#947] Fixes player crashing on internet outage, issue partially addressed.
-Fixed main player losing state after destroy while in background.
-Fixed main player controls not hiding automatically after orientation change.
-Fixed dialog uploader not marqueeing when too long.
-Fixed popup permission throwing NPE on BaseList.
-Refactored popup permissions to start in NavigationHelper.
-Extracted hardcoded string for player menus.
-Bump Java version to 1.8.
-Some lambda conversions.