v2.55.rc2

• FEC-6522 - Unable to play Dash in player
• FEC-6532 - Enable seeking in DVR enabled external live stream
• FEC-6537 - Auto replay from start after post roll Ad
• FEC-6493 - default audio track selection
• FEC-6491 - CVAA: no "options" appears in the captions menu on iPhone with iOS 10
• FEC-6535 - HLSJS: Kaltura Live with DVR: Seek functionality is broken (DVR window is bigger than live streaming length)
• FEC-6547 - Dual player doesn't work with 2.54 (2.53 ok)
• KMS-13549 - Accessibility - Main - Provide alternative text for images
• SUP-9932 - playbackRateSelector key code not working on Firefox
• FEC-6441 - Quiz plugin damaged when switching between dual video options
• FEC-6508 - Duration of last chapter is not calculated
• SUP-9113 - Resizing dimensions in dualScreen
• SUP-9622 - Source selector shows only 'Auto' while using delivery type 'HTTP Progressive Download'
• qnaPushNotification - refactor QnA to use socket.io
• Chromecast - remove workaround for web sender v3 after issue has been fixed
• reverting HLS dependency
• fix dependancy bug