0.0.60
Feature/february changes 11 (#352) * Updated documentation * Added null checking for videoPlayerController inside BetterPlayerController. * Added setMixWithOthers * Added initialStartIndex in BetterPlayerPlaylistConfiguration. * Fixed issue where player did not disposed properly on app quit * Added placeholder parameter in BetterPlayerDataSource * Flutter format, version update * Updated documentation * Added BP images * Added BP images * Flutter format