v2.40.rc1

• FEC-4659 - webcast live - clicking pause/play, the player jumps back a few seconds
• FEC-4471 - HLS OSMF - external stream stuck during manual throttling
• FEC-4629 - Supporting Multi Track Audio on Safari via leveraging Safari API for audio
• FEC-4673 - Support load for Silverlight player
• PLAT-4681 - Events Collection | Player Plugin Creation
• FEC-4690 - Develop Youbora Player Plugin