add a new attribute 'pinVolumeBar' to the volume component. Setting this flag to true will keep the volume bar visible and it will not auto hide.
Also, added a test page pinVolumeBar.html
Adding description to the test page
#FEC-1079 #comment fix bug where kplayer was always removed after preroll
Merge remote-tracking branch 'origin/v2.2.2.rc3_pin_volume_bar' into 2.5-March-23
Update mw.KDPMapping.js

fix the fullscreen api
new client
Merge branch 'master' into 2.5-March-23
#FEC-1092 #comment retrieve playready license server URL in the right way #time 1h
bump 2.5.rc1
multicast dev
merge
Support IE8 in studio
support IE8 in studio
#FEC-1093
Merge branch '2.5-March-23' into multicast
bump 2.5.rc3
Fix uncaught error on IE8
Merge remote-tracking branch 'origin/2.5-March-23' into 2.5-March-23
#SUP-1426 #time 2h
bump 2.5.rc4