WatchParty 0.3.1: watch YouTube and Netflix in sync, with chat and voice

INSTALL (2 minutes)
1. Unzip this folder somewhere permanent. Do not move or delete it after installing.
2. Open your browser and go to:
   Edge:   edge://extensions
   Chrome: chrome://extensions
3. Turn on Developer mode (Edge: toggle in the left rail. Chrome: toggle top right).
4. Click Load unpacked and select this folder, the one that contains manifest.json.
5. Open a YouTube video or a Netflix watch page. A blue WP button appears in the bottom right corner.

USE IT
1. Open a video first, then click the WP button and press Start a party.
2. Click Copy invite link and send it to your friend.
3. Your friend opens the link, and you both land in the same room.
4. Play, pause or seek: both sides follow. Chat lives in the same sidebar.

VOICE CALLS
Press Join voice, allow the microphone, and talk. Mute, the movie and voice sliders, and automatic ducking are right there.

NOTES
- Everyone in the party needs the extension. The invite link does nothing on its own.
- YouTube needs no account. Netflix needs each person's own account.
- Unpacked copies do not auto update. Install from the Chrome Web Store to get updates.
