Updated repos
Added ImageInfo and MediaInfo classes
Update submodules
Updated podspec to require google-cast-sdk 2.4.0
Added DLNA event subscription support
Added support for Google Cast 2.4.0
Added DLNA play state subscription
DLNA: Fix the slow volume notifications from Sonos devices
Changes for media info subscription
Netcast subscriptions over DLNA
Fixed Seek bar getting disabled on netcast and Unable to set volume on netcast
Making changes to get media info from  GetMediaInfo instead of GetPosition
Revert 'Making changes to get media info from  GetMediaInfo instead of GetPosition'
Remove the Samsung-MultiScreen support for release 1.4.0
Merge branch 'sdk_1.4-dev' into sdk_1.4