update player font to include revised icons (refs #184)
media control: add expand/shrink icon toggle to fullscreen button (refs #184)
media control: improve icon glow effect (refs #184)
poster: fix partially hidden icon due to overflow
background button: improve hover effect (refs #184)
dvr controls: add glow effect on back to live hover (refs #184)
dvr controls: fix back to live to resume playback if dvr is paused when it’s hit
add black background to core to avoid displaying media controls on white background
background button: set background area to display mouse pointer mode (refs #205)
change pre-build hook to copy dependencies as well as assets