Update release notes.
Update release notes.

fanhattan/ExoPlayer,PavelSynek/ExoPlayer,Ood-Tsen/ExoPlayer,MaTriXy/ExoPlayer,natez0r/ExoPlayer,jeoliva/ExoPlayer,natez0r/ExoPlayer,yangwuan55/ExoPlayer,superbderrick/ExoPlayer,ened/ExoPlayer,reid-mcpherson/ExoPlayerDebug,danikula/ExoPlayer,KiminRyu/ExoPlayer,pittenga/ExoPlayer,Furystorm/ExoPlayer,WeiChungChang/ExoPlayer,castlabs/ExoPlayer,natez0r/ExoPlayer,barbarian/ExoPlayer,jeoliva/ExoPlayer,ppamorim/ExoPlayer,JasonFengHot/ExoPlayerSource,martinbonnin/ExoPlayer,MaTriXy/ExoPlayer,MaTriXy/ExoPlayer,zhouweiguo2017/ExoPlayer,TheWeatherCompany/ExoPlayer,Furystorm/ExoPlayer,superbderrick/ExoPlayer,aravinds03/ExoPlayer,algrid/ExoPlayer,bongole/ExoPlayer,YouKim/ExoPlayer,stari4ek/ExoPlayer,WeiChungChang/ExoPlayer,amzn/exoplayer-amazon-port,TheWeatherCompany/ExoPlayer,algrid/ExoPlayer,ebr11/ExoPlayer,tntcrowd/ExoPlayer,jcable/ExoPlayer,rubensousa/exoplayer-amazon-port,google/ExoPlayer,Furystorm/ExoPlayer,rubensousa/exoplayer-amazon-port,michalliu/ExoPlayer,Dysonics/ExoPlayer,luckcoolla/ExoPlayer,ebr11/ExoPlayer,stari4ek/ExoPlayer,ClubCom/AndroidExoPlayer,martinbonnin/ExoPlayer,ppamorim/ExoPlayer,jcable/ExoPlayer,barbarian/ExoPlayer,tntcrowd/ExoPlayer,FinalLevel/ExoPlayer,martinbonnin/ExoPlayer,WeiChungChang/ExoPlayer,yangwuan55/ExoPlayer,YouKim/ExoPlayer,kiall/ExoPlayer,YouKim/ExoPlayer,ClubCom/AndroidExoPlayer,jeoliva/ExoPlayer,bongole/ExoPlayer,castlabs/ExoPlayer,saki4510t/ExoPlayer,fanhattan/ExoPlayer,zhouweiguo2017/ExoPlayer,luckcoolla/ExoPlayer,KiminRyu/ExoPlayer,ppamorim/ExoPlayer,aravinds03/ExoPlayer,androidx/media,google/ExoPlayer,rubensousa/exoplayer-amazon-port,stari4ek/ExoPlayer,danikula/ExoPlayer,superbderrick/ExoPlayer,pittenga/ExoPlayer,KiminRyu/ExoPlayer,tntcrowd/ExoPlayer,michalliu/ExoPlayer,Ood-Tsen/ExoPlayer,kiall/ExoPlayer,barbarian/ExoPlayer,androidx/media,ened/ExoPlayer,zhouweiguo2017/ExoPlayer,pittenga/ExoPlayer,google/ExoPlayer,ebr11/ExoPlayer,saki4510t/ExoPlayer,reid-mcpherson/ExoPlayerDebug,ened/ExoPlayer,reid-mcpherson/ExoPlayerDebug,PavelSynek/ExoPlayer,JasonFengHot/ExoPlayerSource,TheWeatherCompany/ExoPlayer,Dysonics/ExoPlayer,Ood-Tsen/ExoPlayer,FinalLevel/ExoPlayer,FinalLevel/ExoPlayer,bongole/ExoPlayer,danikula/ExoPlayer,algrid/ExoPlayer,saki4510t/ExoPlayer,kiall/ExoPlayer,aravinds03/ExoPlayer,androidx/media,amzn/exoplayer-amazon-port,ClubCom/AndroidExoPlayer,yangwuan55/ExoPlayer,castlabs/ExoPlayer,YouKim/ExoPlayer,michalliu/ExoPlayer,amzn/exoplayer-amazon-port,luckcoolla/ExoPlayer,fanhattan/ExoPlayer,JasonFengHot/ExoPlayerSource,jcable/ExoPlayer,Dysonics/ExoPlayer,PavelSynek/ExoPlayer