1. supports external subtitle
2. supports multi audio tracks
3. supports SEI, PdtSeek and mediaType for Vodconfig

2. Add setSDKListener in SuperPlayerPlugin
3. Fix android pip start-up failed in sdk 11.7

1. maxBufferSize and preloadSize modified from integer to floating-point types, and added default values
2. fix download crash when ios' app be killed

2. player widget add stopPlay method
3. vod/live controller's method which named dispose can await now

2. prevent app ios crash when kill
3. fix issue that vod player can not pick width

2. scale out back button size when fullscreen in player widget
3. optimize player widget's bottom layout in fullscreen

2、fix ios receive first frame event before play when prePlay
3、fix player will show loading when enter fullScreen that in prePlay status

2. fix ios predownload path error

2. fix fileId preDownload failed with sign

2. fix video offline download videoQualityId's range error

2、move restorePageBrightness from moreView to demoSuperPlayer

fix the issue of black screen appearing in pip window on some devices & pip window can adjust window radio by video radio