Update function.js

enhancement: #971

Update m3u8.js

Update m3u8.js

Update m3u8.js

Update preview.js

Update m3u8.js

Add master/slave m3u8 merge via BroadcastChannel

Update popup.html

Update m3u8.js

Update m3u8.js

dark

m3u8 ui

Update preview.js

Update m3u8.html