1.4.675

update headroom

1.4.674

remove unused code

1.4.673

update guide

1.4.672

update guide

1.4.671

update playbackmanager.js

1.4.670

jshint fix

1.4.669

update audio playback

1.4.668

update PlaybackManager

1.4.667

update video player

1.4.666

update guide scrolling