v2.68.rc2

• FEC-8072 - KAVA Player V2 - "eventIndex" and "playTimeSum" parameters aren't reset after change media
• SUP-13708 - Player: Changes in Chrome v64 ang moving forward
• add new flag to force adaptive for video less than 10 sec Kaltura.force10secProgressive default is true (#3769)
• fix: operator is not valid for PHP string concatenation (#3754)